How Often Does The Calendar Repeat. The standard gregorian calendar repeats every day, week, month, and year. The day for any date advances one day per year, two days in leap years.

A leap year calendar repeats in 28 years while the calendar of an ordinary year repeats after 6 or 11 years. While it may seem like every year is unique, there are actually certain patterns that cause calendars to align in the same way every so often.