Student or Learner
1)Speakers occasionally use Simple Present to talk about scheduled events in the near future. This is most commonly done when talking about public transportation, but it can be used with other scheduled events as well.
The bus does not arrive at 11 AM, it arrives at 11 PM.
When do we board the plane?
The party starts at 8 o'clock.
When does class begin tomorrow?
2)Speakers sometimes use the Simple Present to express the idea that an action is happening or is not happening now. This can only be done with Non-Continuous Verbs and certain Mixed Verbs.
I am here now.
She is not here now.
They are ok.
My question is:Can we use 'to be' for the future for the future situation or only for 'now' ?
For example: It is my birth day tomorrow.
Yes, we can - and do.
(Except that birthday is all one word.)