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Years with Same Calendar as 1603

The year 1603 had 365 days and started on a sroda (Poland, Gregorian calendar).

This country introduced the modern Gregorian calendar in year 1582, 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 1603
YearCompared to year 1603Since last
150598 years before 
151192 years before+ 6 years
152281 years before+ 11 years
153370 years before+ 11 years
153964 years before+ 6 years
155053 years before+ 11 years
156142 years before+ 11 years
156736 years before+ 6 years
157825 years before+ 11 years
Poland adopted today's Gregorian calendar in 1582. All previous years are based on the Julian calendar.
158617 years before+ 8 years
15976 years before+ 11 years
1603selected year+ 6 years
161411 years after+ 11 years
162522 years after+ 11 years
163128 years after+ 6 years
164239 years after+ 11 years
165350 years after+ 11 years
165956 years after+ 6 years
167067 years after+ 11 years
168178 years after+ 11 years
168784 years after+ 6 years
169895 years after+ 11 years
21 years share the calendar of year 1603 in the 200-year time span from 1503 to 1702.
Note that holidays will not match exactly. Selected year is highlighted.

Extend to 1100 – 2099

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.

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