Atlanta schools may be ending soon, but before you know it, another school year will be upon us. Whether you live ITP, OTP, ...

These graphics explain why Easter Sunday changes each year based on ancient interpretations of the solar and lunar cycles.

Julius Caesar was believed to have messed up the months in a year, but was trying to fix the solar calendar, resulting in one ...

The next full moon is at 12:56 pm EST on Monday, May 12 and is known as the Flower Moon. Here is a look at all the full moons during 2025, interesting facts, as well as when to see them.

Each Islamic month lasts either 29 or 30 days, depending on the moon’s visibility. Consequently, a lunar year is ...

Year-round schools have long been thought to potentially improve academics by reducing the length of summer break. Research nationally has been spotty on how effective that calendar type is toward ...

Due to the complexities of the various types of calendars, the date of Easter can be as early as March 22 and as late as April 25. Here's why.