2018-08←  2018-09 looping  →2018-10

20180901_0000 UTC	20180902_0000 UTC	20180903_0000 UTC	20180904_0000 UTC
20180905_0000 UTC	20180906_0000 UTC	20180907_0000 UTC	20180908_0000 UTC
20180909_0000 UTC	20180910_0000 UTC	20180911_0000 UTC	20180912_0000 UTC
20180913_0000 UTC	20180914_0000 UTC	20180915_0000 UTC	20180916_0000 UTC
20180917_0000 UTC	20180918_0000 UTC	20180919_0000 UTC	20180920_0000 UTC
20180921_0000 UTC	20180922_0000 UTC	20180923_0000 UTC	20180924_0000 UTC
20180925_0000 UTC	20180926_0000 UTC	20180927_0000 UTC	20180928_0000 UTC
20180929_0000 UTC	20180930_0000 UTC

2018-08←  2018-09 looping  →2018-10