Days Ago Calculator
Look up the exact date for any number of days in the past, every day from 1 to 365. Covers contract deadlines, warranty periods, return windows, legal notice periods, and project timelines. Results handle month and year boundaries automatically.
Browse Days
Most Popular Days Ago Lookups
Click any row to open the full calculator.
| Time Period | Common Use Case |
|---|---|
| 7 days ago | One week ago: weekly report comparison and 7-day return windows |
| 14 days ago | Fortnight ago: bi-weekly payroll and sprint lookback |
| 30 days ago | One-month notice period, subscription trial end, 30-day warranty |
| 60 days ago | Two-month contract review and credit card billing cycles |
| 90 days ago | One quarter: probationary periods, tax quarters, 90-day SLAs |
| 180 days ago | Six months: half-year reviews and long-term warranty periods |
| 270 days ago | Nine months: annual contract milestone checks |
| 365 days ago | One year: year-over-year comparisons (one day short of a leap year) |
Who Uses the Days Ago Calculator?
Notice periods, statutory deadlines, and limitation periods are calculated in exact calendar days. 30-day, 60-day, and 90-day windows are the most common. See the 30 Days Ago and 90 Days Ago pages for instant results.
Return and refund windows are typically 14, 30, or 60 days from the purchase date. Customer service teams use days-ago lookups to verify eligibility. Quick links: 14 days ago, 30 days ago, 60 days ago.
Employee onboarding dates, probation period end dates, and payroll cut-off dates are all day-precise. 90-day probation periods and annual review dates are among the most common lookups.
Prescription fill dates, appointment intervals, and vaccination schedules rely on exact day counts. A 30-day or 90-day supply window is a standard pharmacy reference.
How the Days Ago Calculator Works
The calculator subtracts the exact number of days from today's date using UTC day arithmetic. Month and year boundaries are handled automatically. For example, 31 days ago from March 1 correctly returns January 29 (or 30 in a leap year). Select your time zone on the detail page to see the midnight boundary in your local region.
Choose any increment above to open the full calculator. On the detail page you can switch time zones, copy the result, and see the equivalent UTC timestamp alongside your local time.
The Most Important Day Thresholds
Certain day counts appear repeatedly in legal, financial, and business contexts. For week-based periods, see the Weeks Ago calculator. For calendar-month periods, see Months Ago.
- ▸ 7 days: standard short-term return window and weekly reporting cycle
- ▸ 14 days: EU consumer rights cooling-off period and bi-weekly payroll
- ▸ 21 days: three-week sprint retrospective in agile project management
- ▸ 30 days: one-month notice period, standard subscription trial, and common warranty window
- ▸ 45 days: extended return windows for major retailers and some insurance claims
- ▸ 60 days: two-month credit card billing cycle and contractor invoice terms
- ▸ 90 days: one business quarter, standard probationary employment period, and US visa overstay threshold
- ▸ 180 days: six months, used in half-year financial reporting and long-term warranties
- ▸ 365 days: one full year for annual renewals (use 366 days to account for leap years)
Days Ago vs. Months Ago: Which to Use?
For contract law and legal deadlines, days are the correct unit. "30 days" is not the same as "1 month". February has 28 or 29 days, so 1 month before March 31 is February 28/29, while 30 days before March 31 is March 1. When precision matters, always count in days. Use the Months Ago calculator only for approximate calendar-month references.