It's the most wonderful time of the year. And for once, the most wonderful day. You can thank a Jewish Leap Year and other calendrical quirks. Christmas and Hanukkah are coming. On the same date. This ...

In the secular calendar, a new month begins in the middle of the moon’s cycle. In the Jewish calendar, a new month begins with the new moon. The Hebrew word for month is chodesh which also means ...

Humanity is currently engaged in a massive, civilization-sized project to digitize all knowledge. You may have heard about this. The project is huge, but it’s not unified; contained within it are ...

Why is Rosh Hashanah important? Rosh Hashanah begins the leadup to Yom Kippur, some of the holiest days in the Hebrew year (known as "Days of Awe"). Rosh Hashanah celebrates God's creation of mankind ...

Thanks to the widely adopted Gregorian calendar, most people have marked the new year on Jan. 1 for centuries. But with so many other calendar systems — such as the Chinese, Islamic or Hebrew calendar ...