minutes/ hours 1 am 2 am 3 am 4 am 5 am 6 am 7 am 8 am 9 am 10 am 11 am midday 0 – 20 min 21 – 40 min 41 – 60 min minutes/ hours 1 pm 2 pm 3 pm 4 pm 5 pm 6 pm 7pm 8 pm 9 pm 10 pm 11 pm midnight 0 – 20 min 21 – 40 min 41 – 60 min