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

Jan 25, 2026Explore how many Mondays are typically in a month and learn the variations for different months and years.

Jan 24, 2026Learn how to calculate the number of Mondays until June 7th in this quick guide.

Jan 24, 2026Discover why a year can have up to 53 Mondays. Learn the factors that influence this unique occurrence!

Jan 23, 2026Discover the date of the 143rd day of 2024: it's May 22nd! Learn how to calculate day-of-year dates.

Nov 13, 2025Learn why some years have 52 or 53 Fridays and how leap years affect the calendar. Get clarity on this common question!

Sep 30, 2025Discover how many Mondays occur between April 2024 and April 2025 in this quick Q&A.

Sep 24, 2025Discover why 2024 will have 53 weeks and how it aligns with the calendar year.