I'm about to schedule a mail delivery, and I would like to know, if I want to deliver my campaign by Sep 28th, at 12 o'clock (Midday), should I use 12 00 PM or 12 00 AM.
It's just that I'm from another country and I'm not sure about it.
Midday is considered 12pm. It is confusing though, since technically pm means "after noon" and midday is exactly noon.
Personally I am always tempted to go for 12:01 so I know exactly when it should be!