2019-05←  2019-06 looping  →2019-07

20190601_0000 UTC	20190602_0000 UTC	20190603_0000 UTC	20190604_0000 UTC
20190605_0000 UTC	20190606_0000 UTC	20190607_0000 UTC	20190608_0000 UTC
20190609_0000 UTC	20190610_0000 UTC	20190611_0000 UTC	20190612_0000 UTC
20190613_0000 UTC	20190614_0000 UTC	20190615_0000 UTC	20190616_0000 UTC
20190617_0000 UTC	20190618_0000 UTC	20190619_0000 UTC	20190620_0000 UTC
20190621_0000 UTC	20190622_0000 UTC	20190623_0000 UTC	20190624_0000 UTC
20190625_0000 UTC	20190626_0000 UTC	20190627_0000 UTC	20190628_0000 UTC
20190629_0000 UTC	20190630_0000 UTC

2019-05←  2019-06 looping  →2019-07