Years with Same Calendar as 1678

Year: Country:

The year 1678 had 365 days and started on a Saturday (Guinea-Bissau, 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 1678
Year	Compared to year 1678	Since last
Guinea-Bissau adopted today's Gregorian calendar in 1582. All previous years are based on the Julian calendar.
1583	95 years before
1594	84 years before	+ 11 years
1605	73 years before	+ 11 years
1611	67 years before	+ 6 years
1622	56 years before	+ 11 years
1633	45 years before	+ 11 years
1639	39 years before	+ 6 years
1650	28 years before	+ 11 years
1661	17 years before	+ 11 years
1667	11 years before	+ 6 years
1678	selected year	+ 11 years
1689	11 years after	+ 11 years
1695	17 years after	+ 6 years
1701	23 years after	+ 6 years
1707	29 years after	+ 6 years
1718	40 years after	+ 11 years
1729	51 years after	+ 11 years
1735	57 years after	+ 6 years
1746	68 years after	+ 11 years
1757	79 years after	+ 11 years
1763	85 years after	+ 6 years
1774	96 years after	+ 11 years
21 years share the calendar of year 1678 in the 200-year time span from 1578 to 1777. Note that holidays will not match exactly. Selected year is highlighted.

Extend to 1100 – 2099

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