# "preferred"
1985-04-12T23:20:50.123Z
1985-04-12T23:20:50.000Z
2000-01-01T00:00:00.000Z
1985-04-12T23:20:50.123456Z
1985-04-12T23:20:50.120Z
1985-04-12T23:20:50.120000Z

# "supported"
1985-04-12T23:20:50.1235678912345Z
1985-04-12T23:20:50.100Z
1985-04-12T23:20:50Z
1985-04-12T23:20:50.0Z
1985-04-12T23:20:50.123+00:00
1985-04-12T23:20:50.123-07:00
1985-04-12T23:20:50.123+07:00
1985-04-12T23:20:50.123+01:45
0985-04-12T23:20:50.123-07:00
1985-04-12T23:20:50.123-07:00
0123-01-01T00:00:00.000Z

# various precisions, up through at least 12 digits
1985-04-12T23:20:50.1Z
1985-04-12T23:20:50.12Z
1985-04-12T23:20:50.123Z
1985-04-12T23:20:50.1234Z
1985-04-12T23:20:50.12345Z
1985-04-12T23:20:50.123456Z
1985-04-12T23:20:50.1234567Z
1985-04-12T23:20:50.12345678Z
1985-04-12T23:20:50.123456789Z
1985-04-12T23:20:50.1234567890Z
1985-04-12T23:20:50.12345678901Z
1985-04-12T23:20:50.123456789012Z

# extreme but currently allowed
0010-12-31T23:00:00.000Z
1000-12-31T23:00:00.000Z
1900-12-31T23:00:00.000Z
3001-12-31T23:00:00.000Z