How to Compute Hours In a Day?

[jim . monty]

How do I compute the number of hours in a day in a specific time zone?
 
Let's say I want to iterate the days of the year from Jan 1 thru Dec 31
and print the number of hours in each day in the America/New_York time
zone. I expect 363 days to have 24 hours, one day to have 23 hours, and
one day to have 25 hours. I want to know how best to compute these
numbers of hours in each day.
 
Jim Monty