Combine api calls with date and rename api calls

@Ali-Razmjoo : hello again,
I saw that most of the api work is done from todo and also just 2 of them is left.
I would like to work on it ,what does combine api calls with date mean? could you clarify the logic of both ,combin api calls with data and rename api calls.
Also is rename api calls someway related to REST conventions? I have also created a ticket for that.

Waiting for your reply.