[UTC]

Tspec = 500131053030Z

[UTC.invalid]

Tspec = 201801310590Z

[Generalized]

Tspec = 19500101000000Z
Tspec = 19500131053030Z
Tspec = 20000229000000Z
Tspec = 20180131000000Z
Tspec = 20180131053030Z
Tspec = 20200229000000Z
Tspec = 20201231235960Z
Tspec = 21000101000060Z
Tspec = 21000101005900Z
Tspec = 21000101230000Z
Tspec = 22001231235960Z
Tspec = 22010131053030Z

[Generalized.invalid]

Tspec = 20000001000000Z
Tspec = 20000100000000Z

Tspec = 19490131053030Z
Tspec = 20180132000000Z
Tspec = 20180229000000Z
Tspec = 21000101000061Z
Tspec = 21000101006000Z
Tspec = 21000101240000Z
Tspec = 21000101990000Z
Tspec = 21000229000000Z

# Valid date but year out of allowed range
Tspec = 31010131053030Z