2000-10←  2000-11 looping  →2000-12

20001101_0000 UTC	20001102_0000 UTC	20001103_0000 UTC	20001104_0000 UTC
20001105_0000 UTC	20001106_0000 UTC	20001107_0000 UTC	20001108_0000 UTC
20001109_0000 UTC	20001110_0000 UTC	20001111_0000 UTC	20001112_0000 UTC
20001113_0000 UTC	20001114_0000 UTC	20001115_0000 UTC	20001116_0000 UTC
20001117_0000 UTC	20001118_0000 UTC	20001119_0000 UTC	20001120_0000 UTC
20001121_0000 UTC	20001122_0000 UTC	20001123_0000 UTC	20001124_0000 UTC
20001125_0000 UTC	20001126_0000 UTC	20001127_0000 UTC	20001128_0000 UTC
20001129_0000 UTC	20001130_0000 UTC

2000-10←  2000-11 looping  →2000-12