Azizi, if it's 1 AM Tuesday in the UK, it's the 19th
If it's 8 PM Monday in New Hampshire, it's the 18th
If it's 6 PM on Monday in Idaho, it's the 18th

And gnu, gno. Not everybody does daylight time. There's a big chunk of Indiana that doesn't. I'm not sure if they SAY they don't do the D thing or whether they say they flop back and forth from Central Time to Eastern Time.