2018-07←  2018-08 looping  →2018-09

20180801_0000 UTC	20180802_0000 UTC	20180803_0000 UTC	20180804_0000 UTC
20180805_0000 UTC	20180806_0000 UTC	20180807_0000 UTC	20180808_0000 UTC
20180809_0000 UTC	20180810_0000 UTC	20180811_0000 UTC	20180812_0000 UTC
20180813_0000 UTC	20180814_0000 UTC	20180815_0000 UTC	20180816_0000 UTC
20180817_0000 UTC	20180818_0000 UTC	20180819_0000 UTC	20180820_0000 UTC
20180821_0000 UTC	20180822_0000 UTC	20180823_0000 UTC	20180824_0000 UTC
20180825_0000 UTC	20180826_0000 UTC	20180827_0000 UTC	20180828_0000 UTC
20180829_0000 UTC	20180830_0000 UTC	20180831_0000 UTC

2018-07←  2018-08 looping  →2018-09