Carvings on a 12,000-year-old monument in Turkey appear to mark solar days and years, making it possibly the oldest solar ...

April 2025 is officially here and the month has a lot going on. Here's a list of notable dates so you can know what to plan for.

Faculty Members When planning tests, field trips, or other major events for your courses, use the calendar to prepare for impacts to your class on a day that students may take off due to an observance ...

But those are just the beginning of the many important dates in this 30-day month. Along with those marquee holidays, April ...

For example, Martin Luther King Day was added to Ohio’s calendar in 1975. But in the late 1990s to early 2000s, the number of ...