Feb 25, 2026Learn what a serial date number is and how it works in date calculations, with an example using Excel.

Feb 25, 2026Discover why 90 days is 3 months, not 12. Learn the importance of accurate time measurement.

Feb 14, 2026Discover why October 1582 had just 21 days and learn about the introduction of the Gregorian Calendar.

Jan 31, 2026Discover key events that happen every four years, including Leap Year, Summer Olympics, and US Presidential Elections.

Jan 30, 2026Discover how many weeks until June 26, 2024, and plan your mid-year events effectively.

Jan 29, 2026Discover how a year can have 53 Fridays under specific conditions. Unravel the mysteries of calendars!

Jan 28, 2026Discover why June only has 30 days and learn about the Gregorian calendar's structure.