Monday – the Moon’s Day

Monday is the first day of the week according to the international standard ISO 8601, but in the US, Canada, and Japan it's counted as the second day of the week.

Illustration image

Monday is named after the moon.

©iStockphoto.com/Hydromet

Monday comes after Sunday and before Tuesday in our modern day Gregorian Calendar.

Naming Monday

The English word Monday was derived from Old English which literally means “moon’s day”.

  • Middle English – Monday or mone(n)day
  • Latin – dies lunae – “Day of the moon”
  • Old Norse - mánadagr, mandag, mánudagur
  • Old English – mōnandæg or mōndæg
  • Ancient Greek – hemera selenes – “day of the moon”

First or second day?

Monday is considered the first day of the week according to the international standard ISO 8601. In many cultures and languages, Monday is given a name that means either “second day” marking Sunday to be the first day of the week or a name that means the day after Sunday.

Slavic languages number Monday as the first day, not the second day. Many European countries have calendars that mostly show Monday as the first day of the week.

Depressing “Blue Monday”

Monday used to be called “Blue Monday” because it was a day associated with washing clothes that involved blue dye. However, it now refers to the day when employees have to return to work after the weekend.

Least favorite day

In many cultures, Monday is considered the worst day of the week because it is the first day of the work week. A number of songs often feature Monday as a day of depression, anxiety, or melancholy such as “Monday, Monday” by the Mamas & the Papas in 1966 or “Rainy Days and Mondays” by the Carpenters in 1971, not to mention “I Don't Like Mondays” by the Boomtown Rats in 1979.

However, Mondays are considered good days for fasting in Judaism and Islam. In the Eastern Orthodox Church Mondays are days in which Angels are commemorated.

Holidays on a Monday

Several holidays always fall on a Monday such as Labor Day, Memorial Day, Columbus Day and Veteran’s Day.

Topics: Calendar, Weekdays

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The 7 Days of the Week

  1. Monday
  2. Tuesday
  3. Wednesday
  4. Thursday
  5. Friday
  6. Saturday
  7. Sunday
  8. What Are Week Numbers?
  9. Why Does Monday follow Tuesday

The 7-day week


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