Days to Christmas:

base (integers 2-26):






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