The Hebrew calendar is a lunar and solar calendar, meaning its months follow the moon's cycle around the world, whereas the secular calendar is only a solar calendar which follows the sun.
Passover is always celebrated at the same time on the Hebrew calendar, the 15th of Nisan. However, the Hebrew and Western calendars are not the same so Passover falls on different dates on the Western calendar.
1 week = 1 week on the Hebrew calendar. (The Hebrew week is the same length as the week on the Western calendar)
Christmas is not tied to the Hebrew calendar. Since it's tied to the Western calendar, it falls on a different date every year on the Hebrew calendar. (The opposite of Jewish holidays, which are the same date every year on the Hebrew calendar, but different dates on the Western calendar. Here are Hebrew Dates for Christmas for the next 5 Years: 2013 = 22 Tevet 5774 2014 = 3 Tevet 5775 2015 = 13 Tevet 5776 2016 = 25 Kislev 5777 2017 = 7 Tevet 5778
It is made of days, weeks, months, and years, just like the western calendar.
There isn't any festival celebrated along with Christmas as per the Hebrew calendar, since Christmas is not tied to the Hebrew calendar. (So every year, Christmas falls on a different date on the Hebrew calendar).
It always falls on the 10th of Tevet, on the Hebrew calendar. It varies on the western calendar, but it is usually in January.
It is based on the moon instead of the sun.
The Gregorian Calendar is solar and the Hebrew Calendar is lunisolar.
No. There is the Gregorian calendar (used by Americans, Europeans, and Japanese), a Hebrew calendar, and a Muslim calendar at least. Here's a link to a Chinese calendar and an Indian calendar.
In the Hebrew calendar, the month of Av is followed by the month of Elul.
The date of Hanukkah only changes according to the Gregorian calendar, which does not correspond with the Hebrew calendar. According to the Hebrew calendar, it always starts on the same date each year - 25 Kislev.
The date on the Hebrew calendar (10 Tishrei) stays the same, but being that the Hebrew calendar and the secular calendar run on different cycles, the English date will always slightly vary,