A common year starting on Thursday is any non-leap year (i.e. a year with 365 days) that begins on Thursday, 1 January, and ends on Thursday, 31 December. Its dominical letter hence is D. The current year, 2026, is a common year starting on Thursday in the Gregorian calendar, the last such year was 2015 and the next such year will be 2037, or, likewise, 2021 and 2027 in the obsolete Julian calendar, see below for more.
This is the only common year with three occurrences of Friday the 13th: those three in this common year occur in February, March, and November. Leap years starting on Sunday share this characteristic, for the months January, April and July. From February until March in this type of year is also the shortest period (one month) that runs between two instances of Friday the 13th. Additionally, this is the one of only two types of years overall where a rectangular February is possible, in places where Sunday is considered to be the first day of the week. Common years starting on Friday share this characteristic, when Monday is considered to be the first day of the week.
This year has four months (February, March, August, and November) which begin on a weekend-day. Leap years starting on Wednesday share this characteristic.
Calendars
<!-- To avoid arbitrary years, use the most recent year of this type. 2026, the current year, is of this type. -->
Applicable years
Gregorian Calendar
In the (currently used) Gregorian calendar, alongside Tuesday, the fourteen types of year (seven common, seven leap) repeat in a 400-year cycle (20871 weeks). Forty-four common years per cycle or exactly 11% start on a Thursday. The 28-year sub-cycle only spans across century years divisible by 400, e.g. 1600, 2000, and 2400.
For this kind of year, the corresponding ISO year has 53 weeks, and the ISO week 10 (which begins March 2) and all subsequent ISO weeks occur earlier than in all other common years.
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|+ Gregorian common years starting on Thursday