"I will sleep tomorrow morning."

Translation: Saya akan tidur besok pagi.

[TCdot]

Why is akan required? Doesn't "tomorrow morning" already suggest the tense?

[hippodua]

Isn't 'tomorrow morning' 'pagi besok'?

[Brian260733]

Yes, I thought so too. But this seems ambiguous because either word can function as the noun if the other is treated like an adjective. For instance:

When will you sleep?
Tomorrow. (noun)
What kind of Tomorrow? ...the morning part of tomorrow. (morning = descriptor of tomorrow)

OR,

When will you sleep?
In the morning (noun)
What kind of morning? ... the tomorrow kind of morning. (Tomorrow = descriptor of morning.)

It seems both ways should be accepted, but I'm not a native.

[joseboe]

Same question