Years with Same Calendar as 1677
The year 1677 had 365 days and started on a Friday (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 1677 | ||
|---|---|---|
| Year | Compared to year 1677 | Since last |
| Guinea-Bissau adopted today's Gregorian calendar in 1582. All previous years are based on the Julian calendar. | ||
| 1593 | 84 years before | |
| 1599 | 78 years before | + 6 years |
| 1610 | 67 years before | + 11 years |
| 1621 | 56 years before | + 11 years |
| 1627 | 50 years before | + 6 years |
| 1638 | 39 years before | + 11 years |
| 1649 | 28 years before | + 11 years |
| 1655 | 22 years before | + 6 years |
| 1666 | 11 years before | + 11 years |
| 1677 | selected year | + 11 years |
| 1683 | 6 years after | + 6 years |
| 1694 | 17 years after | + 11 years |
| 1700 | 23 years after | + 6 years |
| 1706 | 29 years after | + 6 years |
| 1717 | 40 years after | + 11 years |
| 1723 | 46 years after | + 6 years |
| 1734 | 57 years after | + 11 years |
| 1745 | 68 years after | + 11 years |
| 1751 | 74 years after | + 6 years |
| 1762 | 85 years after | + 11 years |
| 1773 | 96 years after | + 11 years |
20 years share the calendar of year 1677 in the 200-year time span from 1577 to 1776.
Note that holidays will not match exactly. Selected year is highlighted.
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