Why does calendar year 1994 repeat 2000?

The calendar year 1994 repeats in 2000 because both years start on the same day of the week and have the same leap year configuration. Specifically, 1994 was not a leap year, and January 1 fell on a Saturday. Since 2000 is also a non-leap year starting on a Saturday, the days of the week align perfectly, resulting in the same calendar layout. This phenomenon occurs every 28 years, which is why 1994 and 2000 share the same calendar.