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Months equal to December 2018

The month December 2018 has 31 days and starts on a Saturday. December 2018 has 5 Saturdays, 5 Sundays, 5 Mondays.

Months which have the same number of days and starting weekday as December 2018
YearMonthCompared to December 2018Since last
2008March10 years, 9 months before
2009August9 years, 4 months before+ 17 months
2010May8 years, 7 months before+ 9 months
2011January7 years, 11 months before+ 8 months
2011October7 years, 2 months before+ 9 months
2012December6 years before+ 14 months
2014March4 years, 9 months before+ 15 months
2015August3 years, 4 months before+ 17 months
2016October2 years, 2 months before+ 14 months
2017July17 months before+ 9 months
2018Decemberselected month+ 17 months
2020August20 months after+ 20 months
2021May2 years, 5 months after+ 9 months
2022January3 years, 1 months after+ 8 months
2022October3 years, 10 months after+ 9 months
2023July4 years, 7 months after+ 9 months
2025March6 years, 3 months after+ 20 months
2026August7 years, 8 months after+ 17 months
2027May8 years, 5 months after+ 9 months
2028January9 years, 1 months after+ 8 months
2028July9 years, 7 months after+ 6 months
Between years 2008 and 2028 this occurs 21 times. Note that holidays seldom match exactly. Selected month is highlighted.

Which Years Have the Same Calendar?

Reuse your yearly calendar by finding years that have the same number of days and start on the same day of the week.

Which Months Have the Same Calendar?

Find months that have the same number of days and start on the same day of the week.

When Does a Date Fall on a Certain Weekday?

Do you feel dates like Friday the 13th occur often? This calculator tells you exactly when.

About repeating months

A year has 7 months containing 31 days, 4 months containing 30 days and the final month has either 28 or 29 days. All weekdays occur four times.

This means that:

  • 31-day months repeat on average once every year.
  • 30-day months repeat on average four times every 7 years.
  • 29-day months repeat on average once every 28 years.
  • 28-day months repeat on average 3 times every 28 years.