Weird, when I visited the site it was already Feb 3rd in my time zone (Europe/Oslo), and the local time in my time zone was 6:15 am, but it said that it was Groundhog Day.
When I visited the site again now, a few hours later but still Feb 3rd in my time zone, with the current time being 12:12 pm (middle of the day), now it says instead when the next Groundhog Day is (“364 DAYS UNTIL GROUNDHOG DAY 2024”).
Not sure if it is intended exactly like that in terms of time zones or not.
Regardless, cool site and it was interesting to learn a bit more about Groundhog Day. Thank you :)
Interestingly I just watched the German-dubbed version last night and my gf (native German speaker, hence the weird viewing choice) pointed out that Bill Murray actually speaks with Tom Hanks' voice (same dubbing actor).