Except for when the 28-year cycle is disrupted by a non-leap century year, the rules are as follows.
A leap year will repeat itself after 28 years.
The first year after a leap year repeats in a 6-11-11 pattern. This means it will repeat after 6 years, then after 17 years, and then after 28 years.
The second year after a leap year repeats in a 11-6-11 pattern. This means it will repeat after 11 years, then after 17 years, and then after 28 years.
The third year after a leap year repeats in a 11-11-6 pattern. This means it will repeat after 11 years, then after 22 years, and then after 28 years.
There isn't a simple formula, because a leap year throws everything out. A year will repeat either in 5 years time, 6 years time or 11 years time, depending on when a leap year occurs in relation to it.
As of 2018, the next time you can use a 1998 calendar again is in 2026.
As of 2018, the next time you can use a 1987 calendar is in 2026.
1988 calendar year will repeat in 2016.
New Style.
The Gregorian calendar is the calendar that we are currently using.1 year : 365 days1 leap year: 366 daysMonday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday.
The 2008 calendar can be used again in 2036 .
As of 2018, the next time you can use a 1998 calendar again is in 2026.
As of 2018, the next time that you can use a 1989 calendar again is in 2023.
The 2007 calendar is current in 2018. The next time it will be current again is in 2029.
My calendar hangs on my wall.
Calendars do actually repeat in a certain pattern. If the year is not a leap year, then the calendar will repeat in 11 years, so a 2009 calendar would again be usable in the year 2020.
2022.
2009 calendar repeated at 1998.
The 2007 calendar last repeated in 2018 and will repeat again in 2029.
As of 2018, the next time you can use a 1987 calendar is in 2026.
As of 2018, the next time the 2011 calendar can be reused is in 2022.
As of 2018, the next time the 2006 calendar can be reused is in 2023.