90 days ago

The date and what lies in between

“Today” is your device’s date, so the answer is right in your time zone. The page itself was generated on the date in the caption; your browser recounts the table when it opens. Counting back works the same way: yesterday is the first day, and the date shown is the last.

How 90 days are counted

Counting back, yesterday is day 1 and the answer is day 90. Ninety days are 12 weeks plus 6 days, so the answer always falls 1 day later in the week than today (from a Wednesday, a Thursday). Look-back periods in rules and statements are often written this way: “in the last 90 days” usually includes the 90 days before today.

90 days ago or 3 months ago?

Credit, insurance and eligibility rules that look back “90 days” count calendar days unless they say otherwise.

Common 90-day look-backs

• Account and credit histories: “activity in the last 90 days” starts on the date shown; check whether the start date itself counts.
• Returns and warranties: if a purchase was more than 90 days ago, a 90-day window has closed; enter the purchase date in the days between dates calculator to see how many days have passed.
• Habits and logs: a 90-day review covers about 13 weeks.

Checking the date by hand

Count whole weeks first, then the days left over: 90 days are 12 weeks and 6 days. On a wall calendar, move 12 rows up from today, then 6 days to the left, wrapping to the previous row past the edge. That is quicker and less error-prone than counting single days. The table above also lists the weekdays and the federal holidays you pass, which matters when a deadline has to fall on a business day or an office is closed.

To count forward instead, see 90 days from today, or set any start date and period in the date calculator. To add up hours from the period, use the hours calculator.