How do I set the mandatory call volume for the first month of opening?

It's only been a few days since the cell phone opened, so it's on the 30th.

In this case, do I have to fill up all the mandatory calls I have to use in a month by the 30th?

Or do you calculate the day?

Or if it opened on the 25th, can I write it thinking it's a month until the 25th of next month?

669 2017-07-29 Gentleman

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