February is packed with interesting observances, but one that stands out is Leap Day—and the Leap Year that makes it possible ...

We once used to embrace a 13-month calendar, and some cultures still follow this format. So why are they 12 months instead of 13?

Know the dates for the end of Lent, Holy Week and Easter Sunday in 2025. Why does Easter start late this year?

Plants do not realize that the true equinox is the exact moment that the sun crosses the equator and when both the North and ...

Easter is a moveable feast - it can happen anytime between March 22 and April 25. It is set using a mathematical calculation ...

As Iranians celebrate the Persian New Year, explore the fascinating calendars still used around the world—shaped by sun, moon ...

The spring equinox marks the astronomical beginning of spring in the Northern Hemisphere. The balance of daylight shifts, ...

A year has 365 days because Earth takes about 365.25 days to orbit the Sun. The extra 0.25 days are balanced by adding a leap ...

Look west and see the sun set. Look east, the full moon rises. Seeing this phenomenon is impressive, but not unique, according to the Journal’s astronomy expert, Kevin McKeown. In April ...

Pope Gregory’s calendar reform necessitated the adjustment of the number of leap years over a 400-year period from 100 to 97. However, as the Gregorian calendar is not commensurate with the period of ...

Board Member Nick Melvoin cast the lone dissenting vote. He said he is frustrated the calendar is set so late in the school year, includes longer breaks than other districts, and that the school ...

On the first day of the new year, when he picks up his tools to start work again, he is two months older. In the 1500s, the old Julian calendar was replaced by the Gregorian calendar.