I have a question. Can we use "UTC" timezone?

The follow function specification uses "UTC" timezone.

N4830

27.11.6 Class template zoned_traits

[time.zone.zonedtraits]

static const time_zone* default_zone();
Returns: std::chrono::locate_zone("UTC").

However, I can't find "UTC" timezone name or link in timezone database.

FYI, Howard Hinnant reference implementation specialize "UTC" timezone name.

Is "UTC" timezone name is valid for chrono library?