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Months equal to December 2017

The month December 2017 has 31 days and starts on a Friday. December 2017 has 5 Fridays, 5 Saturdays, 5 Sundays.

Months which have the same number of days and starting weekday as December 2017
YearMonthCompared to December 2017Since last
2008August9 years, 4 months before
2009May8 years, 7 months before+ 9 months
2010January7 years, 11 months before+ 8 months
2010October7 years, 2 months before+ 9 months
2011July6 years, 5 months before+ 9 months
2013March4 years, 9 months before+ 20 months
2014August3 years, 4 months before+ 17 months
2015May2 years, 7 months before+ 9 months
2016January23 months before+ 8 months
2016July17 months before+ 6 months
2017Decemberselected month+ 17 months
2019March15 months after+ 15 months
2020May2 years, 5 months after+ 14 months
2021January3 years, 1 months after+ 8 months
2021October3 years, 10 months after+ 9 months
2022July4 years, 7 months after+ 9 months
2023December6 years after+ 17 months
2024March6 years, 3 months after+ 3 months
2025August7 years, 8 months after+ 17 months
2026May8 years, 5 months after+ 9 months
2027January9 years, 1 months after+ 8 months
2027October9 years, 10 months after+ 9 months
Between years 2007 and 2027 this occurs 22 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.