According to the Western tradition, Friday the 13th is a bad day. It happens when the Gregorian calendar's 13th day falls on Friday, which comes at least once a year but may take place up to three times in a single calendar year.
There were three Friday the 13th in February, March, and November of 2015. There were two Friday the 13th in each of the years 2017 through 2020. If a month begins with a Sunday, Friday the 13th will befall that month.
Thirteen has long been associated with apprehension, and many think it stems from the Code of Hammurabi, which supposedly did not include any laws relating to a thirteenth law. A line of text had been left out by mistake by one of the translators. This kind of belief has survived even among the finest brains of human history.
How many Friday the 13th are in 2021?
As many as three Friday the 13ths can be found in every calendar year. The only one we have in 2021 is on August 13. The previous time only one Friday 13th was observed in a calendar year, was in May 2016. Any year that begins on a Friday is destined to begin on a Sunday, and the month of August is no exception. Every Sunday-starting month has a Friday the 13th.
Ten years ago was the last time when a typical year began on a Friday. It will be six years from now, in 2027, before the next one takes place. The Friday the 13th drama has a formula that regulates its repetition. The 13th of August only occurs once every 365-day year, and only when January 1 falls on a Friday in the calendar year.
May 2022 will see another year with only one Friday the 13th after this one. In the leap year of 2020, there were two Friday the 13ths (March 13 and November 13, 2020). The next two Friday the 13ths will occur in 2023, in January and October.