CLOCK MIRROR (11:60) & WATER (18:30) RULES

Mirror Time = 11:60 - Given Time (or 23:60). Water Time = 18:30 - Given Time (use 17:90 if min > 30).

SPEED TIP

For mirror of 8:20, 11:60 - 8:20 = 3:40 in 1 second!