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Months equal to October 2021

The month October 2021 has 31 days and starts on a Friday. October 2021 has 5 Fridays, 5 Saturdays, 5 Sundays.

Months which have the same number of days and starting weekday as October 2021
YearMonthCompared to October 2021Since last
2011July10 years, 3 months before
2013March8 years, 7 months before+ 20 months
2014August7 years, 2 months before+ 17 months
2015May6 years, 5 months before+ 9 months
2016January5 years, 9 months before+ 8 months
2016July5 years, 3 months before+ 6 months
2017December3 years, 10 months before+ 17 months
2019March2 years, 7 months before+ 15 months
2020May17 months before+ 14 months
2021January9 months before+ 8 months
2021Octoberselected month+ 9 months
2022July9 months after+ 9 months
2023December2 years, 2 months after+ 17 months
2024March2 years, 5 months after+ 3 months
2025August3 years, 10 months after+ 17 months
2026May4 years, 7 months after+ 9 months
2027January5 years, 3 months after+ 8 months
2027October6 years after+ 9 months
2028December7 years, 2 months after+ 14 months
2030March8 years, 5 months after+ 15 months
2031August9 years, 10 months after+ 17 months
Between years 2011 and 2031 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.