Can you do GTC extended hours?

Alpaca Trading
1

I do not see an option for GTC extended hours, does anyone know how to do that?

2

Documented as not supported.

https://alpaca.markets/docs/api-documentation/api-v2/orders/

extended_hours
boolean
(default) false. If true, order will be eligible to execute in premarket/afterhours. Only works with type limit and time_in_force day.