Date Calculator
Date Calculator
Add or subtract days from a date to find key deadlines and timelines.
Date Calculation
Select an operation, a base date, and the number of days.
Common Use Cases
- OPT Application: Apply up to 90 days before your program end date. Use subtract to find your earliest filing date.
- H-1B Grace Period: You have 60 days to depart the US after H-1B termination. Add 60 days to find your departure deadline.
- Naturalization (N-400): Apply up to 90 days before meeting residency requirements. Subtract 90 days from your eligibility date.
- STEM OPT Extension: File up to 90 days before current OPT expires. Subtract 90 days to find your earliest application window.
- I-94 Expiration Planning: Plan departure or status change before your authorized stay ends. Subtract buffer days from I-94 date.
- Green Card Renewal: File Form I-90 up to 6 months (180 days) before expiration. Subtract 180 days from expiration date.
This calculator is an estimation tool and does not constitute legal advice.
Always confirm official dates with your Designated School Official (DSO) or other relevant authority.