Conceptually this is a thin wrapper for
Enum with the seven days of the week.
Enum with the months of the year.
Takes in a year and month (e.g. 2020, February) and returns the number of days in that month.
Takes in a year (e.g. 2019) and returns the number of days in that year.
Converts an integer in the range 1-12 into the corresponding
Returns the number of seconds in a day.
Returns the number of seconds in an hour.
Returns the number of seconds in a minute.