Ok, so I changed it up to the equation below, but now if the difference
is calculated between two times on the same day (GMT), it is one minute
off. But if the difference is between two times on different 'days'
(once again, all times GMT), it is correct. Any advice?var startT =
ON_DUTY_TIME.formattedValuevar endT = OFF_DUTY_TIME.formattedValuevar
differenceT = Time2Num(endT, "HH:MM") - Time2Num(startT, "HH:MM")$ =
Num2GMTime(differenceT, "HH:MM")