Use an integer type denoting days since the start date. See Modified Julian date.
Thus tomorrow is always 1 more than today - if you have times you need leap seconds.
Slightly sad to have been downvoted, though, just for making a tentative suggestion (note use of question mark) :'(
Use an integer type denoting days since the start date. See Modified Julian date.
Thus tomorrow is always 1 more than today - if you have times you need leap seconds.