Calendars & Dates » Old Style & New Style: Julian to Gregorian

Convert between Old & New Style dates

Gregorian Calendar

Gregorian Calendar - Wikipedia

Julian Calendar - Wikipedia

Old Style - New Style Reference

By entering any year, a side-by-side calendar is generated showing the Old Style dates on top with the New Style dates on the bottom for each day of the week for each month of the year. Very handy for counting days in one Style or the other but this calendar calculator does not include any Style change over information.

Old Style and New Style Dates and the Change to the Gregorian Calendar - A Summary for Genealogists

By Mike Spathaky.

Perpetual Calendar

Provides a brief explanation of the switch from Gregorian to Julian. Also gives a very detailed table which shows by nation and district, when the change from Old Style to New Style happened. This table is extremely useful.

The Gregorian Calendar Conversion

The National Archives | Palaeography tutorial - Quick reference: Calendar Years

United Kingdom. Explains the pre-decimal English currency system.

Wikipedia, the free encyclopedia - Old Style and New Style Dates