Time Conversion Chart
Minutes to Decimal Hours
Five Minute Intervals Rounded to One Decimal Place
Minutes
Decimal Hours
05
.1
10
.2
15
.3
20
.3
25
.4
30
.5
35
.6
40
.7
45
.8
50
.8
55
.9
60
1.0
It would appear that RAAF log books changed to
decimal time from 1st September 1974
