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Years with Same Calendar as 1821

The year 1821 had 365 days and started on a Monday (United States, Gregorian calendar).

This country introduced the modern Gregorian calendar in year 1752, so previous years are based on the Julian calendar. In that calendar system, a Leap Day was added every four years, without the exceptions defined in today's Gregorian calendar. This affects the selection of years listed here.

Years with same starting weekday and equal number of days to 1821
YearCompared to year 1821Since last
172299 years before 
173388 years before+ 11 years
173982 years before+ 6 years
175071 years before+ 11 years
United States adopted today's Gregorian calendar in 1752. All previous years are based on the Julian calendar.
175368 years before+ 3 years
175962 years before+ 6 years
177051 years before+ 11 years
178140 years before+ 11 years
178734 years before+ 6 years
179823 years before+ 11 years
181011 years before+ 12 years
1821selected year+ 11 years
18276 years after+ 6 years
183817 years after+ 11 years
184928 years after+ 11 years
185534 years after+ 6 years
186645 years after+ 11 years
187756 years after+ 11 years
188362 years after+ 6 years
189473 years after+ 11 years
190079 years after+ 6 years
190685 years after+ 6 years
191796 years after+ 11 years
22 years share the calendar of year 1821 in the 200-year time span from 1721 to 1920.
Note that holidays will not match exactly. Selected year is highlighted.

Extend to 1300 – 2299

Which Years Have the Same Calendar?

Reuse your yearly calendar by finding years that have the same number of days and start on the same day of the week.

Which Months Have the Same Calendar?

Find months that have the same number of days and start on the same day of the week.

When Does a Date Fall on a Certain Weekday?

Do you feel dates like Friday the 13th occur often? This calculator tells you exactly when.