I have script with the following option:

PHP Code:
option value="-5">(GMT -5:00Eastern Time (US Canada), BogotaLima
I recently discovered that my script was not working correctly.

But then I saw that according to this website


the time zone for Eastern Time is -4!!

I thought, what the hell? Did I get the timezone wrong the first time? Or does this have to do with daylight saving?