By setting a deposit limit, you can deposit maximum the amount you have chosen for a certain period.
If you reached your deposit limit and want to determine the day of your next possible deposit, simply count up your last deposits counting backwards until you reached the limit amount. The amount you have deposited that day, you can deposit again after the period of your limit.
You can set your own deposit limit in the section Responsible Gaming under "My Settings" -> "Budgets". You can find it when you log in and scroll down to the bottom of the page.