2018-11←  2018-12 looping  →2019-01

20181201_0000 UTC	20181202_0000 UTC	20181203_0000 UTC	20181204_0000 UTC
20181205_0000 UTC	20181206_0000 UTC	20181207_0000 UTC	20181208_0000 UTC
20181209_0000 UTC	20181210_0000 UTC	20181211_0000 UTC	20181212_0000 UTC
20181213_0000 UTC	20181214_0000 UTC	20181215_0000 UTC	20181216_0000 UTC
20181217_0000 UTC	20181218_0000 UTC	20181219_0000 UTC	20181220_0000 UTC
20181221_0000 UTC	20181222_0000 UTC	20181223_0000 UTC	20181224_0000 UTC
20181225_0000 UTC	20181226_0000 UTC	20181227_0000 UTC	20181228_0000 UTC
20181229_0000 UTC	20181230_0000 UTC	20181231_0000 UTC

2018-11←  2018-12 looping  →2019-01