The time function gives you the current time in seconds. The previous day is the day which is at least 22 hours before the current time but has a different day date than the current day. 22 hours translates to 22 * 3600 seconds.

So one approach would be not to use localtime without an argument but localtime with a time() value adjusted for the difference you want and then check that the day date is different.

In reply to Re: Get previous date by Corion
in thread Get previous date by Chon-Ji

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