Instant.Instant.trunc_hour: def of bend-time-lib@0.4.0.1
Import: import bend-time-lib@0.4.0.1/instant.bend as Instant
Lines 186-189 of bend-time-lib@0.4.0.1/instant.bend: https://jend.leeeet.dev/read.txt?path=bend-time-lib@0.4.0.1/instant.bend&start_line=186&end_line=189

import Base

def Instant.trunc_hour(i: Instant) -> Instant:
  match i:
    case Instant{days, +sod, _}:
      Instant{days, U32.sub(sod, U32.mod(sod, 3600)), 0}

Uses (3):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.mod
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.sub
  https://jend.leeeet.dev/definition.txt?path=bend-time-lib@0.4.0.1/instant.bend&name=Instant