This airticle is aboot the year 1721.

1721 (MDCCXXI) wis a common year stairtin on Wadensday o the Gregorian calendar and a common year stairtin on Sunday o the Julian calendar, the 1721st year o the Common Era (CE) an Anno Domini (AD) designations, the 721st year o the 2nt millennium, the 21st year o the 18t century, an the 2nt year o the 1720s decade. As o the stairt o 1721, the Gregorian calendar wis 11 days aheid o the Julian calendar, that remeened in localised use till 1923.

Millennium: 2nt millennium
Centuries: 17t century18t century19t century
Decades: 1690s  1700s  1710s  – 1720s –  1730s  1740s  1750s
Years: 1718 1719 172017211722 1723 1724