Pedantic Service Announcement (time edition):
When specifying time in the USA, “EST” stands for “Eastern Standard Time”, which is only really relevant for less than half of the year. During daylight saving time it’s “EDT” for “Eastern Daylight Time”.
When you’re not sure if the time you’re specifying is EST or EDT, just say “ET” or “Eastern Time”, which is a generic way to refer to the time zone, regardless of daylight saving status.
Same goes for Pacific / PST / PDT / PT etc.