In this Regulation--
"long/night work time" means any work time--
(a) in excess of 12 hours in a 24 hour period; or
(b) between 12 midnight and 6am (or the equivalent hours in the time zone of the driver's base if the driver is on a journey in a fatigue-regulated heavy vehicle).
Examples:• a period of working for 53 minutes in excess of 12 hours in a 24 hour period counts as 1 hour of long/night work time.• a period of working for 141 minutes between 12 midnight and 3 am counts as 2½ hours of long/night work time.