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Events

Special days marked on this website, for September 13, 2025

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September 13 ns

August 31 os

We mark certain days of the year with ‘On This Day’ posts, recalling events associated with them.

Our events are grouped under two calendars. The Gregorian ‘New Style’ (NS) is the worldwide calendar first issued at Rome in 1582. On that calendar, today is September 13. The Julian ‘Old Style’ (OS), also issued at Rome but in 46 BC, was used in Roman Britain and then in England from Anglo-Saxon times until 1752. It is still used today by roughly 100 million Orthodox Christians worldwide. On that calendar, today is August 31.

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Today

St Aidan Returns King Penda’s Fire

When Penda tried to burn down Bamburgh Castle, St Aidan turned the pagan King’s own weapons against him.

St Aidan (?590-651) came from the island of Iona to Northumbria during the reign of King Oswald, and remained there under Oswald’s successors until his death in 651. He settled himself on the island of Lindisfarne.

On This DayDecember 9 os1 post

The Feast of St Aidan of Lindisfarne

The Calendar below shows the year on the Roman (Gregorian or ‘New Style’) Calendar for 2025. Click on any date to see the events we have marked for it.

Roman Easter 2025: Sunday April 20

Old English Easter 2025: Sunday April 20

Christmas 2025: Thursday December 25

Old English Christmas 2025: Wednesday January 7, 2026