Formal:
* Bagong araw na. (This is the most direct and literal translation)
* Isang bagong araw na. (This emphasizes that it is *one* new day)
Informal:
* Panibagong araw na! (This conveys a sense of excitement or optimism)
* Araw na! (This is a very casual way to say it, similar to "It's a new day!")
You can also use phrases like:
* Simula ng bagong araw. (Start of a new day)
* Magandang araw. (Good day)
The best translation will depend on the context and the tone you want to convey.