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Patterns February starts on the same day of the week as both March and November in common years, and as August in leap years. February ends on the same day of the week as October every year and on the same day of the week as January in common years only. February starts on the same day of the week as June of the previous year in all years. February ends on the same day of the week as May of the previous year in common years and August and November of the previous year in leap years. February ends on the same day of the week as July of the following year in years immediately before common years and April and December of the following year in years immediately before leap years. February starts on the same day of the week as May of the following year in leap years and years immediately before leap years. In leap years, it is the only month that ends on the same weekday it began.

Having only 28 days in common years, it is the only month of the year that can pass without a single full moon. This last happened in 1999 and will next happen in 2018.

February is also the only month of the calendar that once every six years and twice every 11 years consecutively, either back into the past or forward into the future, will have four full 7-day weeks. In countries that start their week on a Monday, it occurs as part of a common year starting on Friday, in which February 1st is a Monday and the 28th is a Sunday, this was observed in 2010 and can be traced back 11 years to 1999, 6 years back to 1993, 11 years back to 1982, 11 years back to 1971 and 6 years back to 1965. In countries that start their week on a Sunday, it occurs in a common year starting on Thursday, with the next occurrence in 2015, and previous occurrences in 2009 (6 years earlier than 2015), 1998 (11 years earlier than 2009) and 1987 (11 years earlier than 1998). This works unless the pattern is broken by a skipped leap year, but no leap year has been skipped since 1900 and no others will be skipped until 2100.


February sections
Intro  History  Pronunciation  Patterns  Events in February  February symbols  References  Further reading  External links  

Patterns
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