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Events

Special days marked on this website, for December 17, 2025

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December 17 ns

December 4 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 December 17. 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 December 4.

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Today

Observation, Analogy, Experiment

Sir Humphry Davy explains in simple terms what it is that leads to scientific progress.

In 1812, research chemist and popular lecturer Humphry Davy was knighted for his services to Science. In that same year, he published an overview of his discipline, Elements of Chemical Philosophy, and prefaced it with an introduction to the basics of the new scientific method. There were, he said, three essential components to it.

On This DayDecember 22 ns3 posts

The birth of Sir Humphrey Davy (1778)

Today

St John Damascene

John’s enduring influence is evident today in the rich sights and sounds of Christian liturgy.

St John Damascene (676-749) was Syrian monk and a contemporary of our own St Bede, both of them highly respected scholars with a deep love for Church music. John left us an exposition of Christian theology of enduring importance throughout east and west; he compiled a wealth of hymns, collects and prayers; and he saved Christian iconography everywhere from the hands of extremists.

On This DayDecember 9 os4 posts

The Feast of St John Damascene (AD 749)

Today

The Spear of St Mercurius

Roman Emperor Julian was ready to destroy an entire Christian community over his wounded pride.

This story was told to his congregation by Elfric of Eynsham (955-1010) on the Feast of the Dormition of Mary. It is quite true that in 363, Julian the Apostate, pagan Emperor of Rome and cruel persecutor of Christians, was mortally wounded by an unknown assailant wielding a spear.

On This DayDecember 9 os1 post

The Feast of St Mercurius (AD 250)

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