Why does Hanukkah last 8 days?

Answer 1

A story tells of a legendary miracle. After the war, When the Jews returned to rededicate the Ancient Temple, they found that there was only enough oil to keep the eternal lamp burning for 1 day. It would take 8 days to make more of this special oil. So the lit the lamp, and it miraculously burned for 8 days, giving them plenty of time to make more oil to keep the lamp burning.
But this is a legend. The real reason is probably the fact that during the war, the Jews were unable to celebrate the 8-day harvest festival of Sukkot, so they celebrated it late.

Answer:

The above answer is non-traditional. Celebrating a festival in a non-ideal manner would hardly be a reason to institute a completely different festival for all time. The comment about the late harvest festival is from a non-traditional source and is not quoted in halakha-texts. Moreover, our tradition is that the miracle of the oil did indeed occur and isn't just a legend. If it wasn't for the clear tradition of our Sages, Hanukkah would have been forgotten long ago. So here is our actual tradition:
The Seleucids (Syrian-Greeks) under Antiochus Epiphanes (2nd century BCE), at the instigation of the Hellenizers, had forbidden various Torah-practices in Judea, such as Sabbath-observance and circumcision, rededicated the Temple to a Greek idol, and pressed the Jews to offer up idolatrous sacrifices. Despite being heavily outnumbered, the Hasmoneans (a family of religious Jews) fought to retake the Holy Temple, which had been seized by the Seleucids, and to enable the people to once again observe the Torah. The Hasmoneans (also called Maccabees) were miraculously victorious. When they reached the Temple grounds, they immediately reconsecrated it to God. As part of this action, they relit the Menorah (Exodus ch.25), which was fueled with olive oil. However, it soon became apparent that there was only sufficient oil to keep the candelabra burning for one single day - and it would take eight days to make and bring some more.
Miraculously, the menorah stayed lit for eight days (Talmud, Shabbat 21b), allowing enough time for new oil to be prepared and brought.
The significance of the miracle is that it demonstrated that God's presence still dwelt in the Holy Temple. This is what Hanukkah represents: the closeness to God; and the avoidance of Hellenization (assimilation).
The Torah Sages instituted the festival of Hanukkah at that time (Talmud, Shabbat 21b), to publicize the miracle (Rashi commentary, ibid). This is why we light our Hanukkah-menorahs.
(The Hanukkah-menorah, or hanukkiyah, is a special form of the original seven-branched menorah. Our Hanukkah-menorahs have eight spaces for oil, or candles, to mark each of the eight days for which the oil lasted and a ninth to hold the shamash, a candle used to light the others.)
The eight-day rededication of the Temple is also mentioned in the book of Maccabees (I, 4:56-59; and II, 1:18); and Josephus mentions the eight-day festival in Antiquities ch.12.
The Al-Hanisim prayer which we recite during Hanukkah centers around the Hasmoneans' victory and rededication of the Temple, while the candle-lighting commemorates the miracle of the oil.
Though the military victory is prominently mentioned in the prayers, it wouldn't have been celebrated if not for the miracle of the oil, just as we have no special occasion to mark Abraham's victory (Genesis ch.14), or those of Moses (Numbers ch.21), Joshua, Deborah (Judges ch.4), Gideon (Judges ch.6-7), Jephthah (Judges ch.11), or King David. And though the Hasmonean battles continued for two decades after the retaking of the Temple, the Sages instituted Hanukkah immediately after the miracle of the oil.
It should also be noted that the main goal for which the Maccabees fought was not political independence. They fought to enable the people to observe the Torah's commandments; as we say in the Al Hanisim prayer: "the Greeks sought to cause us to forget Your Torah and leave Your statutes."

Answer 2

Because when the Maccabees regained control over Jerusalem and the Temple from the Seleucid Empire in ancient times, they only had enough oil to keep the Temple's menorah burning for a single day. However, it miraculously burned for eight days, allowing them sufficient time to make more oil.

Answer:
Here is some more information. The Seleucids (Syrian-Greeks) under Antiochus Epiphanes (2nd century BCE), at the instigation of the Hellenizers, had forbidden various Torah-practices such as Sabbath-observance and circumcision, rededicated the Temple to a Greek idol, and pressed the Jews to offer up sacrifices to the idol. One of the leading elder Jewish sages called upon the people to keep observing the Torah anyway; and if necessary, to use force in resisting the decrees. When a Hellenized Jew offered a sacrifice to the Greek idols in a nearby village, the sage killed him as well as the Greek overseer. This brought a violent reaction from the Greeks; and the loyal Jews, led by the Hasmonean family, were forced to retreat from their towns and strike out at the Greeks in an attempt to oust them from the Holy Land and to enable the people to once again observe the Torah. The Torah-Jews were heavily outnumbered by the attacking Greek armies, but God gave them miraculous victories again and again. After three years of struggle, the Greek armies retreated from Jerusalem, and the Hasmoneans (also called Maccabees) entered the Holy Temple which the Greeks had defiled, reconsecrated it to God, and began the Temple service once more. Among other things, they wanted to relight the olive oil candelabrum (Exodus ch. 25), but could only find one day's supply of undefiled oil - and it would take eight days to make and bring some more.
Miraculously, the menorah stayed lit for eight days (Talmud, Shabbat 21b), allowing enough time for new oil to be prepared and brought. The significance of the miracle is that it demonstrated that God's presence was still there. The Torah-community was overjoyed, because God's presence meant everything to them.
This is what Hanukkah represents: the closeness to God; and the avoidance of Hellenization (assimilation).
The Torah Sages instituted the festival of Hanukkah at that time (Talmud, Shabbat 21b), to publicize the miracle (Rashi commentary, ibid). This is why we light our Hanukkah-menorahs.
(The Hanukkah-menorah, or hanukkiyah, is a special form of the original seven-branched menorah. Our Hanukkah-menorahs have eight spaces for oil, or candles, to mark each of the eight days for which the oil lasted and a ninth to hold the shamash, a candle used to light the others.)
The Al-Hanisim prayer which we recite during Hanukkah centers around the Hasmoneans' victory and rededication of the Temple, while the candle-lighting commemorates the miracle of the oil.
Though the military victory is prominently mentioned in the prayers, it wouldn't have been celebrated if not for the miracle of the oil. It should also be noted that the main goal for which the Maccabees fought was not political independence. They fought to enable the people to observe the Torah's commandments; as we say in the Al Hanisim prayer: "the Greeks sought to cause us to forget Your Torah and leave Your statutes."
The Seleucids (Syrian-Greeks) under Antiochus Epiphanes (2nd century BCE), at the instigation of the Hellenizers, had forbidden various Torah-practices such as Sabbath-observance and circumcision, rededicated the Temple to a Greek idol, and pressed the Jews to offer up sacrifices to the idol. One of the leading elder Jewish sages called upon the people to keep observing the Torah anyway; and if necessary, to use force in resisting the decrees. When a Hellenized Jew offered a sacrifice to the Greek idols in a nearby village, the sage killed him as well as the Greek overseer. This brought a violent reaction from the Greeks; and the loyal Jews, led by the Hasmonean family, were forced to retreat from their towns and strike out at the Greeks in an attempt to oust them from the Holy Land and to enable the people to once again observe the Torah. The Torah-Jews were heavily outnumbered by the attacking Greek armies, but God gave them miraculous victories again and again. After three years of struggle, the Greek armies retreated from Jerusalem, and the Hasmoneans (also called Maccabees) entered the Holy Temple which the Greeks had defiled, reconsecrated it to God, and began the Temple service once more. Among other things, they wanted to relight the olive oil candelabrum (Exodus ch. 25), but could only find one day's supply of undefiled oil - and it would take eight days to make and bring some more.
Miraculously, the menorah stayed lit for eight days (Talmud, Shabbat 21b), allowing enough time for new oil to be prepared and brought. The significance of the miracle is that it demonstrated that God's presence was still there. The Torah-community was overjoyed, because God's presence meant everything to them.
This is what Hanukkah represents: the closeness to God; and the avoidance of Hellenization (assimilation).
The Torah Sages instituted the festival of Hanukkah at that time (Talmud, Shabbat 21b), to publicize the miracle (Rashi commentary, ibid). This is why we light our Hanukkah-menorahs.
(The Hanukkah-menorah, or hanukkiyah, is a special form of the original seven-branched menorah. Our Hanukkah-menorahs have eight spaces for oil, or candles, to mark each of the eight days for which the oil lasted and a ninth to hold the shamash, a candle used to light the others.)
The eight-day rededication of the Temple is also mentioned in pre-Talmudic sources: Megillat Taanit (ch.9), the book of Maccabees (I, 4:56-59; and II, 1:18); and Josephus (Antiquities ch.12).
The Al-Hanisim prayer which we recite during Hanukkah centers around the Hasmoneans' victory and rededication of the Temple, while the candle-lighting commemorates the miracle of the oil.
Though the military victory is prominently mentioned in the prayers, it wouldn't have been celebrated if not for the miracle of the oil, just as we have no special occasion to mark Abraham's victory (Genesis ch.14), or those of Moses (Numbers ch.21), Joshua, Deborah (Judges ch.4), Gideon (Judges ch.6-7), Jephthah (Judges ch.11), or King David. And though the Hasmonean battles continued for two decades after the retaking of the Temple, the Sages instituted Hanukkah immediately after the miracle of the oil.
It should also be noted that the main goal for which the Maccabees fought was not political independence. They fought to enable the people to observe the Torah's commandments; as we say in the Al Hanisim prayer: "the Greeks sought to cause us to forget Your Torah and leave Your statutes."

Answer 3

There are two answers to your question. The first and most widely known is that after the tyrants had raided the Second Temple in Jerusalem, the Jews only found a small amount of oil. This oil was said to last only one day, but it really lasted eight. This is actually just a legend that was written 400 years after the war.
The second and not as commonly known reason is that Hanukkah is supposed to be a late Sukkot. During the war, the harvest festival of Sukkot couldn't be observed. So it was observed 2 months late.

Answer:The above answer is non-traditional.
1) The explanation connected with Sukkot is not based upon traditional Jewish sources and need not be considered.
2) Our tradition is that the miracle of the oil did indeed occur and isn't just a legend. If it wasn't for the clear tradition of our Sages, Hanukkah would have been forgotten long ago.
The Seleucids (Syrian-Greeks) under Antiochus Epiphanes (2nd century BCE), at the instigation of the Hellenizers, had forbidden various Torah-practices such as Sabbath-observance and circumcision, rededicated the Temple to a Greek idol, and pressed the Jews to offer up sacrifices to the idol. One of the leading elder Jewish sages called upon the people to keep observing the Torah anyway; and if necessary, to use force in resisting the decrees. When a Hellenized Jew offered a sacrifice to the Greek idols in a nearby village, the sage killed him as well as the Greek overseer. This brought a violent reaction from the Greeks; and the loyal Jews, led by the Hasmonean family, were forced to retreat from their towns and strike out at the Greeks in an attempt to oust them from the Holy Land and to enable the people to once again observe the Torah. The Torah-Jews were heavily outnumbered by the attacking Greek armies, but God gave them miraculous victories again and again. After three years of struggle, the Greek armies retreated from Jerusalem, and the Hasmoneans (also called Maccabees) entered the Holy Temple which the Greeks had defiled, reconsecrated it to God, and began the Temple service once more. Among other things, they wanted to relight the olive oil candelabrum (Exodus ch. 25), but could only find one day's supply of undefiled oil - and it would take eight days to make and bring some more.
Miraculously, the menorah stayed lit for eight days (Talmud, Shabbat 21b), allowing enough time for new oil to be prepared and brought. The significance of the miracle is that it demonstrated that God's presence was still there. The Torah-community was overjoyed, because God's presence meant everything to them.
This is what Hanukkah represents: the closeness to God; and the avoidance of Hellenization (assimilation).
The Torah Sages instituted the festival of Hanukkah at that time (Talmud, Shabbat 21b), to publicize the miracle (Rashi commentary, ibid). This is why we light our Hanukkah-menorahs.
(The Hanukkah-menorah, or hanukkiyah, is a special form of the original seven-branched menorah. Our Hanukkah-menorahs have eight spaces for oil, or candles, to mark each of the eight days for which the oil lasted and a ninth to hold the shamash, a candle used to light the others.)
The eight-day rededication of the Temple is also mentioned in pre-Talmudic sources: Megillat Taanit (ch.9), the book of Maccabees (I, 4:56-59; and II, 1:18); and Josephus (Antiquities ch.12).
The Al-Hanisim prayer which we recite during Hanukkah centers around the Hasmoneans' victory and rededication of the Temple, while the candle-lighting commemorates the miracle of the oil.
Though the military victory is prominently mentioned in the prayers, it wouldn't have been celebrated if not for the miracle of the oil. It should also be noted that the main goal for which the Maccabees fought was not political independence. They fought to enable the people to observe the Torah's commandments; as we say in the Al Hanisim prayer: "the Greeks sought to cause us to forget Your Torah and leave Your statutes."

Answer 4

Hanukkah is 8 days long because after the Maccabees defeated the Syrian-Greeks, they went to the Temple. The Syrian-Greeks had destroyed everything, including allowing the Ner Tamid, (the Eternal Light) to go out. In the Temple, the Jews would light a menorah, (a seven branched candle holder; see Exodus ch.25). (Only back then, they didn't use candles obviously.)

The Jews only found enough oil for 1 day, but it ended up miraculously lasting 8 days, until they could replenish their stock.

And that's why there are 8 days of Hanukkah.

Answer 5

Because of how many days the tiny amount of oil miraculously lasted in the menorah of the Temple.

The Seleucids (Syrian-Greeks) under Antiochus Epiphanes (2nd century BCE), at the instigation of the Hellenizers, had forbidden various Torah-practices such as Sabbath-observance, and pressed the Jews to offer up idolatrous sacrifices. The Hasmoneans (a family of religious Jews) fought to retake the Holy Temple, which had been seized by the Seleucids, and to enable the people to once again observe the Torah. When they reached the Temple grounds, they found only one day's supply of unsullied olive oil, but the oil lamps miraculously burned for eight days, allowing enough time for new oil to be prepared and brought.

The significance of the miracle is that it demonstrated that God's presence still dwelt in the Holy Temple. This is what Hanukkah represents: the closeness to God; and the avoidance of Hellenization (assimilation).

The Torah Sages instituted the festival of Hanukkah at that time (Talmud, Shabbat 21b), to publicize the miracle (Rashi commentary, ibid).

Answer 6

A story in the Talmud (400 years after the Maccabean War) tells of a legendary miracle. After the war, When the Jews returned to rededicate the ancient Temple, they found that there was only enough oil to keep the eternal lamp burning for 1 day. It would take 8 days to make more of this special oil. So the lit the lamp, and it miraculously burned for 8 days, giving them plenty of time to make more oil to keep the lamp burning.

Answer:

Jewish tradition states that the miracle described above did indeed occur and is not a mere legend.

On Hanukkah, the chief celebration is for the miracle of the oil (Talmud, Shabbat 21b), which occurred during the Hasmonean victory over the Syrian-Greeks; and we also thank God for His having helped us to oust the Syrian-Greeks (Seleucids) and their lackeys, the Hellenizing Jews.

The Seleucids (Syrian-Greeks) under Antiochus Epiphanes (2nd century BCE), at the instigation of the Hellenizers, had forbidden various Torah-practices such as Sabbath-observance and circumcision, rededicated the Temple to a Greek idol, and pressed the Jews to offer up sacrifices to the idol. One of the leading elder Jewish sages called upon the people to keep observing the Torah anyway; and if necessary, to use force in resisting the decrees. When a Hellenized Jew offered a sacrifice to the Greek idols in a nearby village, the sage killed him as well as the Greek overseer. This brought a violent reaction from the Greeks; and the loyal Jews, led by the Hasmonean family, were forced to retreat from their towns and strike out at the Greeks in an attempt to oust them from the Holy Land and to enable the people to once again observe the Torah. The Torah-Jews were heavily outnumbered by the attacking Greek armies, but God gave them miraculous victories again and again. After three years of struggle, the Greek armies retreated from Jerusalem, and the Hasmoneans (also called Maccabees) entered the Holy Temple which the Greeks had defiled, reconsecrated it to God, and began the Temple service once more. Among other things, they wanted to relight the olive oil candelabrum (Exodus ch. 25), but could only find one day's supply of undefiled oil - and it would take eight days to make and bring some more. Miraculously, the menorah stayed lit for eight days (Talmud, Shabbat 21b), allowing enough time for new oil to be prepared and brought. The significance of the miracle is that it demonstrated that God's presence was still there. The Torah-community was overjoyed, because God's presence meant everything to them. This is what Hanukkah represents: the closeness to God; and the avoidance of Hellenization (assimilation). The Torah Sages instituted the festival of Hanukkah at that time (Talmud, Shabbat 21b), to publicize the miracle (Rashi commentary, ibid). This is why we light our Hanukkah-menorahs. (The Hanukkah-menorah, or hanukkiyah, is a special form of the original seven-branched menorah. Our Hanukkah-menorahs have eight spaces for oil, or candles, to mark each of the eight days for which the oil lasted and a ninth to hold the shamash, a candle used to light the others.) The Al-Hanisim prayer which we recite during Hanukkah centers around the Hasmoneans' victory and rededication of the Temple, while the candle-lighting commemorates the miracle of the oil. Though the military victory is prominently mentioned in the prayers, it wouldn't have been celebrated if not for the miracle of the oil. It should also be noted that the main goal for which the Maccabees fought was not political independence. They fought to enable the people to observe the Torah's commandments; as we say in the Al Hanisim prayer: "The Greeks sought to cause us to forget Your Torah and leave Your statutes."

Answer 7

On Hanukkah, the chief celebration is for the miracle of the oil, which occurred during the Hasmonean victory over the Syrian-Greeks (Talmud, Shabbat 21b); and we also thank God for His having helped us to oust the Syrian-Greeks (Seleucids) and their lackeys, the Hellenizing Jews. The Syrian-Greeks, at the instigation of the Hellenizers, had forbidden various Torah-practices, such as Sabbath-observance, and pressed the Jews to offer up idolatrous sacrifices. The Hasmoneans (a religious Jewish family) fought to retake the Holy Temple, which had been seized by the Seleucids, and to enable the people to once again observe the Torah. When they reached the Temple grounds, they found only a single day's supply of pure olive oil, but the oil lamps miraculously burned for eight days (ibid.), allowing enough time for new oil to be prepared and brought.

The significance of the miracle is that it demonstrated that God's presence still dwelt in the Holy Temple.

The Al-Hanisim prayer centers around the Hasmoneans' victory, while the candle-lighting commemorates the miracle of the oil.

Answer 8

On Hanukkah, the chief celebration is for the miracle of the oil (Talmud, Shabbat 21b), which occurred during the Hasmonean victory over the Syrian-Greeks in the Second Temple era; and we also thank God for His having helped us to oust the Syrian-Greeks (Seleucids) and their lackeys, the Hellenizing Jews. The Seleucids, at the instigation of the Hellenizers, had forbidden various Torah-practices, such as Sabbath-observance, and pressed the Jews to offer up idolatrous sacrifices. The Hasmoneans (a religious Jewish family) fought to retake the Holy Temple, which had been seized by the Seleucids, and to enable the people to once again observe the Torah. When they reached the Temple grounds, they found only one day's supply of unsullied olive oil, but the oil lamps miraculously burned for eight days (ibid.), allowing enough time for new oil to be prepared and brought.

The significance of the miracle is that it demonstrated that God's presence still dwelt in the Holy Temple.

The Torah Sages instituted the festival of Hanukkah at that time (Talmud, Shabbat 21b), to publicize the miracle (Rashi commentary, ibid). The eight-day rededication of the Temple is also mentioned in the book of Maccabees (I, 4:36; and II, 1:18); and Josephus mentions the eight-day festival in Antiquities ch.12.

The Al-Hanisim prayer which we recite during Hanukkah centers around the Hasmoneans' victory, while the candle-lighting commemorates the miracle of the oil.

Though the military victory is prominently mentioned in the prayers, it wouldn't have been celebrated if not for the miracle of the oil, just as we have no special occasion to mark Abraham's victory (Genesis ch.14), or those of Moses (Numbers ch.21), Joshua, Deborah (Judges ch.4), Gideon (Judges ch.6-7), Jephthah (Judges ch.11), or King David. And though the Hasmonean battles continued for two decades after the retaking of the Temple, the Sages instituted Hanukkah immediately after the miracle of the oil.

It should also be noted that the main goal for which the Maccabees fought was not political independence. They fought to enable the people to observe the Torah's commandments; as we say in the Al Hanisim prayer: "the Greeks sought to cause us to forget Your Torah and leave Your statutes."

Answer 9

Because the miracle lasted eight days and nights.

Here's the background:

The Seleucids (Syrian-Greeks) under Antiochus Epiphanes (2nd century BCE), at the instigation of the Hellenizers, had forbidden various Torah-practices such as Sabbath-observance and circumcision, rededicated the Temple to a Greek idol, and pressed the Jews to offer up sacrifices to the idol. One of the leading elder Jewish sages called upon the people to keep observing the Torah anyway; and if necessary, to use force in resisting the decrees. When a Hellenized Jew offered a sacrifice to the Greek idols in a nearby village, the sage killed him as well as the Greek overseer. This brought a violent reaction from the Greeks; and the loyal Jews, led by the Hasmonean family, were forced to retreat from their towns and strike out at the Greeks in an attempt to oust them from the Holy Land and to enable the people to once again observe the Torah. The Torah-Jews were heavily outnumbered by the attacking Greek armies, but God gave them miraculous victories again and again. After three years of struggle, the Greek armies retreated from Jerusalem, and the Hasmoneans (also called Maccabees) entered the Holy Temple which the Greeks had defiled, reconsecrated it to God, and began the Temple service once more. Among other things, they wanted to relight the olive oil candelabrum (Exodus ch. 25), but could only find one day's supply of undefiled oil - and it would take eight days to make and bring some more.

Miraculously, the menorah stayed lit for eight days (Talmud, Shabbat 21b), allowing enough time for new oil to be prepared and brought. The significance of the miracle is that it demonstrated that God's presence was still there. The Torah-community was overjoyed, because God's presence meant everything to them.

This is what Hanukkah represents: the closeness to God; and the avoidance of Hellenization (assimilation).

The Torah Sages instituted the festival of Hanukkah at that time (Talmud, Shabbat 21b), to publicize the miracle (Rashi commentary, ibid). This is why we light our Hanukkah-menorahs.

(The Hanukkah-menorah, or hanukkiyah, is a special form of the original seven-branched menorah. Our Hanukkah-menorahs have eight spaces for oil, or candles, to mark each of the eight days for which the oil lasted and a ninth to hold the shamash, a candle used to light the others.)

The Al-Hanisim prayer which we recite during Hanukkah centers around the Hasmoneans' victory and rededication of the Temple, while the candle-lighting commemorates the miracle of the oil.

Though the military victory is prominently mentioned in the prayers, it wouldn't have been celebrated if not for the miracle of the oil. It should also be noted that the main goal for which the Maccabees fought was not political independence. They fought to enable the people to observe the Torah's commandments; as we say in the Al Hanisim prayer: "The Greeks sought to cause us to forget Your Torah and leave Your statutes."