This airticle is aboot the year 1621.

1621 (MDCXXI) wis a common year stairtin on Fryday o the Gregorian calendar and a common year stairtin on Monanday o the Julian calendar, the 1621st year o the Common Era (CE) an Anno Domini (AD) designations, the 621st year o the 2nt millennium, the 21st year o the 17t century, an the 2nt year o the 1620s decade. As o the stairt o 1621, the Gregorian calendar wis 10 days aheid o the Julian calendar, that remeened in localised use till 1923.

Millennium: 2nt millennium
Centuries: 16t century17t century18t century
Decades: 1590s  1600s  1610s  – 1620s –  1630s  1640s  1650s
Years: 1618 1619 162016211622 1623 1624