If by Biblical days you mean the years BC (Before Christ) or early AD (Anno Domini (In the Year of Our Lord)), the State of Israel did not exist, it was formed by the United Nations when the Country of Palestine was split to make space for a Jewish State in 1947, also France as we know it today also did not exist in the early years BC, it was then a much bigger Country known as Gaul.
If you are referring to the territories which went on to form these two separate countries, they are geographically quite a distance from each other, France being in Western Europe and Israel being in the Middle East.
France has only 7 days in a week, just like anywhere in the world.
Every day of the year is the feast day of several saints in France or anywhere else in the world.
In Israel it lasts seven days, and in the diaspora (out of Israel) it lasts eight days.
If it your average letter, anywhere from 7 to 10 days.
it can take anywhere from 1 to 3 business days
Seven days in Israel, eight elsewhere.
If you are speaking of Israel in Biblical days there would only be a short season that would be cold as Israel is usually a warm climate. Many houses had indoor cooking spaces and these could be used to warm the house in cold weather as the houses were quite small.
The period of the judges began soon after the death of Joshua about B.C. 1361 and lasted until Saul was made King of Israel about B.C. 1020. The very last verse in Judges tells us, " In those days (the days of the judges) there was no king in Israel: Everyone did what was right in his own eyes." Samuel, the priest who anointed Saul to be king and later anointed David was the last judge in Israel.
In Israel, Shavuot is 1 day. In the diaspora, it is 2 days.
In Israel it's celebrated for 7 days while outside Israel, Succot is celebrated for 8 days.
Rosh Hashana is the only Jewish holiday that is two days long both in and out of Israel. See the question "why does rosh hashanah last for two days"
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