Christmas

Days to Christmas:

base (integers 2-26):
Choose a timezone:
choose a different date
give your date a name
tick for exact date, untick for "next instance of"
choose a fake now

In Europe/London
it is now: 2022-01-16 09:53:43.049709+00:00
Next Christmas starts at: 2022-12-25 00:00:00+00:00
Which is a Sun and is in 342 days, 14:06:16.950291
Which is 29599576 seconds
or about 29 megaseconds

this is approximately 343 days
decimal:343
binary:0b101010111
octal:0527
hex:0x157

provide a timezone to see the answer there

provide a different date to see how far away it is

provide both a timezone and a different date