15. September 2026 - 15:00 till 23:45

Pi Day (UK) - The only one this century!, All across the UK, Tuesday, 15. September 2026

This day will only happen once in our lifetimes!

Do invite all your friends to join in and mark this special day :-)

At 3.14 am and 3.14 pm, on Tuesday 15th September '26,
the time and date will be:

3.14 15/9/26

And the first few digits of Pi are:

3.14 15 9 26 ...

This ought to be a national holiday of course but, failing that, we should all book a day off work and do Pi-related things :-)

To read more about this unique number, see:



Celebrate by making a Pi Pie, putting pi-shaped ice-cubes in your drinks, trying to memorise the digits of Pi....

"How I like a drink, alcoholic of course..."

I hope the people around in the year 2653 have a party too.
We can only do this one in 2026 by writing the date in its UK standard 15/9/26 format. Would be even better as 3.14 hrs on 15/9/2653, but I will be dead by then!

Tuesday, 15. September 2026, All across the UK, Pi Day (UK) - The only one this century!

Find more interesting events
Get event recommendations based on your Facebook taste. Get it now!Show me the suitable events for meNot now