Correction

See http://en.wikipedia.org/wiki/Indian_massacre_of_1622#Julian_Calenda...

Date of the Attack

Julian Calendar Dates

Under the Julian Calendar, by which England and its colonies were still operating, New Year's Day fell on March 25 (Lady Day or the Feast of the Annunciation). The attack took place on March 22, 1621 as reckoned by the colonists, three days before New Years Day 1622. Historians, genealogists, and others who work with dates in this era commonly denote Julian calendar dates in the interval between January 1 and March 24 with the 'Old Style' suffix (OS) when presenting these dates with their original year value, or to use a mixed-style date syntax which combines original and adjusted values. For example, the date of the attack on Jamestown can be denoted as March 22, 1621(OS), or March 22, 1621/22. The common practice of showing the date as March 22, 1622 is technically inaccurate, but less confusing for those who are unfamiliar with the differences in calendaring systems.