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Months equal to 一月 2011

The month 一月 2011 has 31 days and starts on a 土曜日. 一月 2011 has 5 Saturdays, 5 Sundays, 5 Mondays.

Months which have the same number of days and starting weekday as 一月 2011
YearMonthCompared to 一月 2011Since last
2001十二月9 years, 1 months before
2003三月7 years, 10 months before+ 15 months
2004五月6 years, 8 months before+ 14 months
2005一月6 years before+ 8 months
2005十月5 years, 3 months before+ 9 months
2006七月4 years, 6 months before+ 9 months
2007十二月3 years, 1 months before+ 17 months
2008三月2 years, 10 months before+ 3 months
2009八月17 months before+ 17 months
2010五月8 months before+ 9 months
2011一月selected month+ 8 months
2011十月9 months after+ 9 months
2012十二月23 months after+ 14 months
2014三月3 years, 2 months after+ 15 months
2015八月4 years, 7 months after+ 17 months
2016十月5 years, 9 months after+ 14 months
2017七月6 years, 6 months after+ 9 months
2018十二月7 years, 11 months after+ 17 months
2020八月9 years, 7 months after+ 20 months
2021五月10 years, 4 months after+ 9 months
Between years 2001 and 2021 this occurs 20 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.