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Years with Same Calendar as 1601

The year 1601 had 365 days and started on a Segunda-feira (Portugal, 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 1601
YearCompared to year 1601Since last
150992 years before 
151586 years before+ 6 years
152675 years before+ 11 years
153764 years before+ 11 years
154358 years before+ 6 years
155447 years before+ 11 years
156536 years before+ 11 years
157130 years before+ 6 years
Portugal adopted today's Gregorian calendar in 1582. All previous years are based on the Julian calendar.
159011 years before+ 19 years
1601selected year+ 11 years
16076 years after+ 6 years
161817 years after+ 11 years
162928 years after+ 11 years
163534 years after+ 6 years
164645 years after+ 11 years
165756 years after+ 11 years
166362 years after+ 6 years
167473 years after+ 11 years
168584 years after+ 11 years
169190 years after+ 6 years
19 years share the calendar of year 1601 in the 200-year time span from 1501 to 1700.
Note that holidays will not match exactly. Selected year is highlighted.

Extend to 1100 – 2099


Which Years Have the Same Calendar?

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