Method Calendar.TimeRanges.TimeRange()>offset_to()
 Method offset_to
offset_to(int
TimeRange
x
) Description

Calculates offset to x; this compares two timeranges and gives the integer offset between the two starting points.
This is true for suitable a and b: a+a>offset_to(b)==b
By suitable means that a and b are of the same type and size. This is obviously true only if a+n has b as a possible result for any n.