2018-01←  2018-02 looping  →2018-03

20180201_0000 UTC	20180202_0000 UTC	20180203_0000 UTC	20180204_0000 UTC
20180205_0000 UTC	20180206_0000 UTC	20180207_0000 UTC	20180208_0000 UTC
20180209_0000 UTC	20180210_0000 UTC	20180211_0000 UTC	20180212_0000 UTC
20180213_0000 UTC	20180214_0000 UTC	20180215_0000 UTC	20180216_0000 UTC
20180217_0000 UTC	20180218_0000 UTC	20180219_0000 UTC	20180220_0000 UTC
20180221_0000 UTC	20180222_0000 UTC	20180223_0000 UTC	20180224_0000 UTC
20180225_0000 UTC	20180226_0000 UTC	20180227_0000 UTC	20180228_0000 UTC

2018-01←  2018-02 looping  →2018-03