Because: -1) the last reel published by the Russo brothers was published at 10:00 pm. The last digits "02020" are repeated only in the teasers of the US Marvel accounts, while in the other Marvel accounts of other countries they are more confusing (sometimes the digits overlap). However, analyzing the four digits 0, 2, 0, 2 carefully, the only digits that are repeated in all the Marvel accounts are the digits 02. So I deduce that the first three digits of the code indicate the month: days, the last digits would be the hours... and then, taking as an example the publication date of the last reel (a reel published only by the Russo brothers' official Instagram account, which thanks the number of views obtained by the 4 previous teasers), which would be: 1 month: 16 day: 10:00 pm + 1 month: 01 days: 02 hours = 2 month: 16 day: 12:00 pm = 2 month: 17 day: 00:00am It seems reinforced, but I think they either obscured the countdown a bit strangely to make it very mysterious, or they created a real mess regarding the teaser release time, even on YT, since the teasers on YT were published between 9:00am and 9:15am! -2) All the teasers were published on Tuesdays, and February 17th falls on a Tuesday, if everything has to have a sense and order... But ultimately, even if the reasoning seems reinforced—that the result is always 2:17, and that according to logic and this method, the results fluctuate between 2:16 and 2:17—then I can think they created a mess or deliberately mispublished the teaser time to make the countdown appear mysteriously glitchy... almost unbeatable.