1. What is OPT Time Calculation?

OPT (Optional Practical Training) time calculation determines the duration between two dates, which is important for international students tracking their work authorization period in the United States.

2. How Does the Calculator Work?

The calculator uses a simple date difference formula:

Where:

• \( End\ Date \) — The ending date of the OPT period
• \( Start\ Date \) — The starting date of the OPT period

Explanation: The calculation counts all calendar days between the two dates, inclusive of the start date but exclusive of the end date.

3. Importance of OPT Time Calculation

Details: Accurate OPT time calculation is crucial for maintaining legal status, planning employment, and ensuring compliance with USCIS regulations.

4. Using the Calculator

Tips: Enter the start and end dates in YYYY-MM-DD format. The calculator will compute the total number of days between these dates.

5. Frequently Asked Questions (FAQ)

Q1: Does this include weekends and holidays?
A: Yes, the calculation includes all calendar days between the two dates.

Q2: Is the end date included in the count?
A: No, the calculation counts up to but does not include the end date.

Q3: What's the maximum OPT period allowed?
A: Typically 12 months for standard OPT, with possible 24-month extension for STEM degrees.

Q4: How does this relate to unemployment days?
A: While this calculates total days, F-1 students must track unemployment days separately (limited to 90 days during standard OPT).

Q5: Can I use this for CPT calculations?
A: While the date math works similarly, CPT has different rules and limitations compared to OPT.