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 ...

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

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 ...

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

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.