How do I discern Maidenhead Locator from GPS lat long info.

[richard]

if your time offset from utc is 3.00 hours then the minutes and seconds are irrelevant.
after adding your offset then you need to check if the new hours is >23
if so then add a day to the date then test if that is greater
than the number of days for that month [ don't forget leap years / leap centuries],
then increment the month if there are too many days
you may even need to increment the year , not forgetting to set the new day/month to the appropriate value after all
the incrementing and the new hour to modulo 24

better still get a raspberry pi use python datetime
now=datetime.datetime.utcnow()+datetime.timedelta( hours=3)
and it does everything in one line