Date for the last day in the month that this Date is in.
assert(Date(1999, 1, 6).endOfMonth == Date(1999, 1, 31)); assert(Date(1999, 2, 7).endOfMonth == Date(1999, 2, 28)); assert(Date(2000, 2, 7).endOfMonth == Date(2000, 2, 29)); assert(Date(2000, 6, 4).endOfMonth == Date(2000, 6, 30));
See Implementation
Date for the last day in the month that this Date is in.