The Paschal full moon appeared on April 12 this year. So Easter is on April 20, the first Sunday after the full moon's ...

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 ...

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

Easter's date changes annually because it is based on the lunar calendar. It occurs on the first Sunday after the Paschal ...

Carvings on a 12,000-year-old monument in Turkey appear to mark solar days and years, making it possibly the oldest solar calendar in ancient civilization. Marking a massive comet strike as the ...

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 ...

Question: I plan to retire next year. Initially, I wanted to leave my job in May, although I'm now curious about the financial advantages of staying through the calendar year. Does it matter what ...

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.