get Span Minutes
Parameters
span Minutes
DND duration in minutes, 0 < spanMinutes < 1440. For example, start time 00:00, end time 01:00, then spanMinutes = 60. Set to 1439 for all-day do-not-disturb (23 * 60 + 59 = 1439)
DND duration in minutes, 0 < spanMinutes < 1440. For example, start time 00:00, end time 01:00, then spanMinutes = 60. Set to 1439 for all-day do-not-disturb (23 * 60 + 59 = 1439)