09-06-2019 == 09-06-2019 = 1
09-06-2019 != 09-06-2019 = 0
09-06-2019 < 09-06-2019 = 0
09-06-2019 <= 09-06-2019 = 1
09-06-2019 > 09-06-2019 = 0
09-06-2019 >= 09-06-2019 = 1
09-06-2019 == 07-08-2019 = 0
09-06-2019 != 07-08-2019 = 1
09-06-2019 < 07-08-2019 = 1
09-06-2019 <= 07-08-2019 = 1
09-06-2019 > 07-08-2019 = 0
09-06-2019 >= 07-08-2019 = 0
PASS date_compare (exit status: 0)