Regex pattern for Temporal.PlainDateTime ISO 8601 strings (e.g. 2023-01-15T13:45:30).
Validates month (01–12), day (01–31), hours (00–23), minutes/seconds (00–59),
and up to 9 fractional digits. No timezone offset.
Also accepts the trailing [u-ca=…] annotation that toJSON() emits under a
non-ISO calendar (e.g. 2023-01-15T13:45:30[u-ca=hebrew]).
Regex pattern for Temporal.PlainDateTime ISO 8601 strings (e.g.
2023-01-15T13:45:30). Validates month (01–12), day (01–31), hours (00–23), minutes/seconds (00–59), and up to 9 fractional digits. No timezone offset.Also accepts the trailing
[u-ca=…]annotation thattoJSON()emits under a non-ISO calendar (e.g.2023-01-15T13:45:30[u-ca=hebrew]).