Nova API timestamp formats

gistfile1.txt

$> git grep '20[0-9][0-9]-' doc/api_samples/ | wc -l
509

with UTC TZ:

$> git grep '20[0-9][0-9]-[0-9][0-9]-[0-9][0-9]T[0-9][0-9]:[0-9][0-9]:[0-9][0-9]Z' doc/api_samples/ | wc -l
230

with zero offset TZ:

$> git grep  '20[0-9][0-9]-[0-9][0-9]-[0-9][0-9]T[0-9][0-9]:[0-9][0-9]:[0-9][0-9][-\+]00:00' doc/api_samples/ | wc -l
157

(note, apparently -00:00 is not allowed by iso8601 but is allowed by rfc3339, see
"Unknown Local Offset Convention" in the RFC)

with non-zero offset TZ

$> git grep '20[0-9][0-9]-[0-9][0-9]-[0-9][0-9]T[0-9][0-9]:[0-9][0-9]:[0-9][0-9][-\+]0[1-9]:00' doc/api_samples/ | wc -l
6

with no TZ and decimal seconds:

$> git grep '20[0-9][0-9]-[0-9][0-9]-[0-9][0-9]T[0-9][0-9]:[0-9][0-9]:[0-9][0-9]\.[0-9][0-9]*' doc/api_samples/ | wc -l
58

with no TZ and non-decimal seconds:

$> git grep '20[0-9][0-9]-[0-9][0-9]-[0-9][0-9]T[0-9][0-9]:[0-9][0-9]:[0-9][0-9][^.Z+-]' doc/api_samples/ | wc -l
5

with no TZ, non decimal seconds and no T separator:

$> git grep '20[0-9][0-9]-[0-9][0-9]-[0-9][0-9] [0-9][0-9]:[0-9][0-9]:[0-9][0-9][^.Z+-]' doc/api_samples/ | wc -l
10

with no TZ, decimal seconds and no T separator:

$> git grep '20[0-9][0-9]-[0-9][0-9]-[0-9][0-9] [0-9][0-9]:[0-9][0-9]:[0-9][0-9]\.[0-9][0-9]*' doc/api_samples/ | wc -l
47

confirm that's them all:

$> git grep '20[0-9][0-9]-' doc/api_samples/ | grep -v '20[0-9][0-9]-[0-9][0-9]-[0-9][0-9]T[0-9][0-9]:[0-9][0-9]:[0-9][0-9]Z' | grep -v '20[0-9][0-9]-[0-9][0-9]-[0-9][0-9]T[0-9][0-9]:[0-9][0-9]:[0-9][0-9][-\+]00:00' | grep -v '20[0-9][0-9]-[0-9][0-9]-[0-9][0-9]T[0-9][0-9]:[0-9][0-9]:[0-9][0-9][-\+\]0[1-9]:00' | grep -v '20[0-9][0-9]-[0-9][0-9]-[0-9][0-9]T[0-9][0-9]:[0-9][0-9]:[0-9][0-9]\.[0-9][0-9]*' | grep -v '20[0-9][0-9]-[0-9][0-9]-[0-9][0-9]T[0-9][0-9]:[0-9][0-9]:[0-9][0-9][^.Z+-]' | grep -v '20[0-9][0-9]-[0-9][0-9]-[0-9][0-9] [0-9][0-9]:[0-9][0-9]:[0-9][0-9][^.Z+-]' | grep -v '20[0-9][0-9]-[0-9][0-9]-[0-9][0-9] [0-9][0-9]:[0-9][0-9]:[0-9][0-9]\.[0-9][0-9]*' | wc -l