this is an... incredibly useful block? What do you mean it's the most useless? It's literally the most accurate timer in scratch, and I use it regularly, from syncing, to timers, to calculating FPS.
if it was (days, weeks, months, years, decades, centuries) (since/until) (year, month, date) (2024, 2023, 2022 or January, February, September, June or (2024) (january) (1)) then what would be the most useless block with that
Out of all of the strangest blocks there are in scratch, people chose the most practical one to call the most useless, it's sad that people think that it's useless.
I don’t think it is useless! I use it to calculate Offline Earnings in the game! To calculate, save the current days since 2000 in a variable of list, then, the next time you open the project, subtract the current days since 2000 by the days since 2000 that you’ve saved, and you have how many days you were not in this project! You don’t have to calculate using the current(day) block because its maximum day count changes because the month number different, thus making it pretty annoying for me!
if you needed "days since 2016" you could subtract (365*16)(may have error with leap year). but this is still a little vague because its not obvious if it's days since january 1 2016 or days since december 31 2016.
(let's say you want the difference between some "saved" amount of days and the days now and you multiply it by 86,400 for the seconds, then multiply it by some gain per second and BOOM, you have offline progress)