I don’t generally read them to the minute very often. For the most part, 5 min increments are close enough for what I need, most of the time. If I do need a more precise time, I’m usually already closely watching the clock and it’s just addition (was 1341 when I started this, now it’s 1345.).

If I need to get the precise time, cold, than it’s as simple as: closest 5 min tick, then add or subtract minute ticks till you get to the minute hand

Eventually you get to the point where it’s not something you consciously think about. You just look at the clock and then pattern recognition takes over and you just know what time it is.