However, here are a few options depending on the context:
Informal:
* Maayong hapon sa tanan! (This literally translates to "Good afternoon to all!")
* Hapon na! (This means "It's afternoon!" and is more casual.)
Formal:
* Maayong adlaw sa tanan! (This literally translates to "Good day to all!" and can be used in the afternoon.)
More specific:
* Assalamu alaykum! (This is an Arabic greeting meaning "Peace be upon you," often used by Muslims.)
* Kamusta! (This is a general greeting meaning "How are you?")
The best choice will depend on the situation and your relationship with the people you're greeting.