Gets the local transition date-time, as would be expressed with the 'before' offset.
!(p)
This is the date-time where the discontinuity begins expressed with the 'before' offset.
At this instant, the 'after' offset is actually used, therefore the combination of this
date-time and the 'before' offset will never occur.
!(p)
The combination of the 'before' date-time and offset represents the same instant
as the 'after' date-time and offset.
@return the transition date-time expressed with the before offset, not null
Gets the local transition date-time, as would be expressed with the 'before' offset. !(p) This is the date-time where the discontinuity begins expressed with the 'before' offset. At this instant, the 'after' offset is actually used, therefore the combination of this date-time and the 'before' offset will never occur. !(p) The combination of the 'before' date-time and offset represents the same instant as the 'after' date-time and offset.
@return the transition date-time expressed with the before offset, not null