Spanish doesn't use AM/PM:
Spanish uses a 24-hour clock. So, instead of saying "11:20 AM", you'd say:
* Las once y veinte (11:20)
Important Note: If you need to emphasize that it's in the morning, you can add "de la mañana" (of the morning).
* Las once y veinte de la mañana (11:20 in the morning)
Let me know if you need help translating other times!