Note: this change will not affect existing memberships dates; it will only set the default for when adding new memberships.
1. Navigate to the Account tab.
2. Select the Settings section.
3. Select the Billing tab or follow this link.
4. Use the drop down to select a date.
Note: Not all months have 31 days. If the current month is Feb for example, and you've selected 31, it will charge on the last billing date of the month, Feb 28th.
5. Hit Save.