The U.S. market allows extended hours trading, you are able to trade during pre-market and post-market sessions. Moomoo's extended hours are the following:
2.1 Pre-Market Hours:04:00-9:30(ET)
2.2 Post-Market Hours:16:00-20:00(ET)
2.3 Half-Day Post-Market:13:00-17:00(ET)
3. Settlement
North American equity orders settle on trade date plus 2 business days (T+2).