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/ rfc3339regex.txt
Last active
November 3, 2020 02:25
RFC3339 regexes - with day checking including leap years!
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| # https://tools.ietf.org/html/rfc3339 | |
| # https://en.wikipedia.org/wiki/Leap_year | |
| ## LEAP YEARS ## | |
| # From wikipedia: "Every year that is exactly divisible by four is a leap year, | |
| # except for years that are exactly divisible by 100, but these centurial years | |
| # are leap years if they are exactly divisible by 400. For example, the years 1700, | |
| # 1800, and 1900 are not leap years, but the years 1600 and 2000 are." | |
| # | |
| # Therefore, the following years are leap years: |