Random Abbreviation Week (RAW!) pt. 2

Sunday
“SOS” is the international distress call, originally for ships, but does not stand for “save our souls / ship.” In fact, the letters don’t stand for any words, but the Morse code (3 dots, 3 dashes, 3 dots) to transmit the signal can be tapped out quickly and without pauses.
Monday
FBI = Federal Bureau of Investigation, though the letters also make up the Bureau’s motto of “Fidelity, Bravery, Integrity.”
Tuesday
AM / PM = Ante Meridiem (Latin: before midday) and Post Meridiem (after midday).
Wednesday
EPCOT = Experimental Prototype Community Of Tomorrow. Founder Walt Disney imagined this not as a theme park, but an actual working city of people planning a better future.
Thursday
REI = Recreational Equipment, Inc.
Friday
IBM = International Business Machine
Saturday
GOP = Grand Old Party, used in the US to refer to the Republican party since the 1870s.