Hex Hex (Boardman) ISO 8601 Comment .0100 0_10_0 00:05:37.5 .0200 0_20_0 00:11:15 .0400 0_40_0 00:22:30 .0800 0_80_0 00:45:00 .1000 1_00_0 01:30:00 1.5:24 = 1:16 = 0.1 .8000 8_00_0 12:00:00 12:24 = 8:16 = 0.8 .F000 F_00_0 22:30:00 22.5:24 = 15:16 = 0.F .F800 F_80_0 23:15:00