Good luck trying to schedule a meeting for January 0 or February 30.

CALENDARS
Aldi’s shoppers, rejoice! The store’s 2024 Advent calendars are coming soon.
Our 2025 word-a-day calendar covers old-timey slang terms, fascinating phrase origins, and more.
A year’s worth of facts can be found in this desktop-friendly calendar.
The end of the holiday season can also mean the end of a marriage for many couples.
The last week of February is packed with palindromes, the most anticipated of which is 2/22/22, or "Twosday."
According to his tombstone, Thomas Lambert was born in in May 1683 and died in February of the same year. It wasn't a mistake, but instead a quirk in the calendar.
Happy leap year! You can thank Julius Caesar and his buddies for bringing them to Europe more than 2000 years ago.
We’ve been adding an extra day to February since Julius Caesar overhauled the Roman calendar and implemented leap years in 46 BCE.
Nobody can seem to agree on whether the new decade began on January 1, 2020, or if it actually begins on January 1, 2021.
The palindrome party starts now with 9-10-19 and doesn’t stop until next Thursday, 9-19-19. After that, you’ll have to wait until 2111.
The Romans referred to the days of the month by their relation to the 'Kalends,' the 'Ides,' and the 'Nones.' If Caesar had been killed any other day, his famous warning might have sounded much less ominous.
Today, people around the globe will feel uneasy about getting out of bed, leaving their homes, or going about their normal daily routines, all because of a superstition.
Who needs computers or calendars when you've got your brain?
It used ten-day weeks...until Napoleon gave it the axe.
Leap Day comes just once every four years. Here's a list of eight events that occurred on this rare day.
Louise Estes has given birth to three children on three consecutive Leap Days. Was it fate, or careful planning?
For one year, more than two centuries ago, September 3-13 didn't exist in the British Empire.
Researchers find that people attach more meaning to Mondays and Fridays, but have fewer mental representations of mid-week days.