1950 Calendar year is exactly the same as 1961, 1967, 1978, 1989, 1995, 2006, 2017, 2023, 2034, 2045. As 1950 was not a leap year, none of these are leap years. http://www.jimloy.com/math/day-week.htm has the calculation method I used.
The 2008 calendar will repeat in 2036. Calendar patterns repeat every 28 years because of the cycle of leap years.
The 2000 calendar will repeat in 2028. This was a leap year and leap year calendars generally repeat every 28 years.
The 1969 calendar will repeat in the year 2045. The calendar repeats every 28 years.
Animal symbols in the Chinese New Year calendar repeat every 12 years.
The calendar of 1998 will repeat in the year 2029. This is because there is a 11-year cycle for calendars to repeat. In this cycle, the days of the week for a particular date will match up again after 11 years. Therefore, the calendar of 1998 will align with the calendar of 2029.
Common years usually repeat after 6 or 11 years and leap years usually repeat after 28 years, except between most centuries. However, the calendar completely repeats every 400 years.
As 1964 was a leap year, it does not repeat very often. It repeated in 1992 and in the rest of this century it will only repeat in 2020, 2048 and 2076.
The calendar for the year 1987 will repeat exactly in the year 2018. This is because the Gregorian calendar repeats every 28 years. The calendar for any specific year will repeat in the year that is a multiple of 28 years later.
The 2012 calendar year will repeat in the year 2040. This is because the Gregorian calendar repeats every 28 years. In the year 2012, the days of the week matched up with the days in 2040, meaning the calendar will be the same for both years.
The 2015 calendar will repeat in 2026.
The 2000 calendar will repeat in 2028.
The 2015 calendar will repeat in 2026.