[gaogao]

Yeah, the SI symbol for minutes is min, if you're going to abbreviate it in a technical context. Super funky using M.

[williamscales]

Agree the correct abbreviation is min.

Nitpick: could be wrong but I don’t think minutes is an SI derived unit.

[gaogao]

Yeah, it's under "Non-SI units accepted for use with SI", so more ISO than SI, but has standards for how it's used with SI units, esp since M has meaning there