Monks, I'm trying to calculate whether a given date is a major holiday, namely Thanksgiving. The string is in date format like this 2017-11-20. Using DateTime I can do things like tell the day of the week of the server, but how do I parse a date submitted in a string to figure out if it is the 4th Thursday of the month? I'm confused. I believe Thanksgiving is between the 22nd and 28th and the 4th Thursday of the month, but I don't know how to calculate that from a date. I can do something like this: 
$thanks = "2017-11-24";
my ($thyear, $thmonth, $thday) = split(/-/,$thanks);

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but I don't know how to figure out which Thursday it is.

In reply to Calculating holidays by htmanning

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