New Netherland and Beyond
Old Julian Calendar,
Dating of Documents
The old Julian calendar was used in Sweden and in New Sweden, being ten days earlier than the Dutch calendar of this period and that of the present day. The English began their year on March 25.
The English often employed first, second and third month, etc. Hence when they wrote March 23, 1644, it was March 23, 1645 according to the Swedish calendar, and April 2, 1645 according to the Dutch
- written by the English 1 mo. 23,1644/45.
In other respects their time was the same as that of the Swedes, the only chance for confusion being that the first two months of the Swedish year were the last two months of the English.
Swedish Settlements on the Delaware, Amandus Johnson, (c)1911, p 43.