30 days ago

Looking back 30 days

30 days ago is the date behind every "within the last 30 days" question: is a purchase still inside the return window, is a charge recent enough to dispute, has a payment gone 30 days past due. It's four weeks and two days back, so it falls two weekdays before today's weekday.

Inside or outside the window?

On Monday, March 15, 2027, 30 days ago was Saturday, February 13, 2027. With a 30-day return policy, something bought on February 13 reaches the last day of its window today; something bought on February 12 is a day too late. When a report or a policy says "the last 30 days" and includes today, it covers Sunday, February 14 through March 15: 30 days counting both ends, so it starts 29 days back. That one-day difference is the most common reason two systems disagree about a 30-day window.

Where people check 30 days back

• Returns and price adjustments. Store policies count from the purchase date or the delivery date, and the receipt usually says which.
• Late payments and credit reports. Lenders usually don't report a missed payment to the credit bureaus until it's at least 30 days past due, though a late fee can apply sooner.
• Card disputes. Under the Fair Credit Billing Act, the FTC says to send a billing-error dispute so it reaches the card issuer within 60 days after the first statement with the error was mailed. A charge from 30 days ago is usually still in time, and issuers may allow longer.
• Forms and screenings that ask whether you've done something "in the past 30 days".

30 business days back

Counting 30 business days back from March 15, 2027 reaches Friday, January 29, 2027, six weeks and three days earlier, because the count skips weekends and Presidents' Day on February 15. If a policy says 30 business days, it's a much longer look back than it sounds.

Looking ahead instead? See 30 days from today. For a longer look back, see 90 days ago, or count the days between two dates with days between dates.