numbat/examples/format_time.nbt

let time = 17.47 hours

let num_seconds = mod(time -> seconds, 60 seconds)
let num_minutes = mod(time - num_seconds, 60 minutes) -> minutes // floor
let num_hours = floor((time - num_minutes - num_seconds) / 1 hour) × hour -> hours

assert_eq(num_hours + num_minutes + num_seconds -> s, time -> s, 1ms)

print("{num_hours/h}:{num_minutes/min}:{num_seconds/s}")