In the billing section (which is hard to find, btw), in the section Payment Methods, subsection Credit Cards, it says the card is billed monthly, but it doesn't say what day that will happen on.
Thanks for this suggestion, this would not be a bad addition to the page. For your own information, the date of the next charge will be the 1st of the month. All DigitalOcean accounts using a credit card for payment are charged on the 1st each month.
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