Can merchants bill subscriptions on a fixed day of the month?
Short answer
Yes. A monthly offer can bill on a chosen day. When a month is shorter than that day, the charge runs on the last day of the month, so a subscription billed on the 31st is charged on February 28 or 29, then on March 31.
In detail
Yes.
Any rhythm
Offers bill every N days, weeks, months or years: every 28 days, every 3 months, every year.
A chosen billing day
Monthly offers can bill on a fixed day of the month.
Short months handled
When the chosen day does not exist in a month, the charge lands on its last day, then returns to the chosen day the month after.