No, this is a myth. In related links there is a print screen showing at least one clock not set at 4:20 which quite a few in the pawn shop were set to, but not every clock in the movie. Also, the wristwatch that the boxer's dad sent him is set to 12:12 so that also proves this wrong.
the tripods expired and the clock stopped |~pato~| 420 SWED
The Least Common Multiple of 12, 7, and 5 is 420.
There are .42 amps in 420 mA. Equation 420/1000 = .42 amps
420.
LCM(15, 28) = 420
420
The second hand on the clock circles 420 times in 7 hours.
the tripods expired and the clock stopped |~pato~| 420 SWED
10°, on a standard 12-hour clock. The minute hand is pointing at the 4, but the hour hand has advanced by 1/3 of an hour, which is 1/36 of a full circle, or 10°.
70% of 600 = 420 of the books are fiction
420 euro.420 euro.420 euro.420 euro.420 euro.420 euro.420 euro.420 euro.420 euro.420 euro.420 euro.
4203 = 420 x 420 x 420 = 74088000
21% of 420= 21% * 420= 0.21 * 420= 88.2
95% of 420 = 399 = 95% * 420 = 95%/100% * 420 = 0.95 * 420 = 399
88% of 420= 88% * 420= 0.88 * 420= 369.6
38% of 420= 38% * 420= 0.38 * 420= 159.6
35% of 420 = 35% * 420 = 0.35 * 420 = 147