In Jain tradition, “Teras” means the 13th day (Trayodashi) of the lunar fortnight (both bright — Shukla Paksha, and dark — Krishna Paksha).

There is no single fixed Gregorian date for Teras; it changes every month and every year because it follows the lunar calendar, not the English (solar) calendar.

For March 2026, the exact Teras dates (both Shukla and Krishna) depend on:

• Which Jain Panchang you follow (Digambar / Shwetambar)
• The geographical location (India vs. abroad), as tithi start–end times can shift by hours and may change the civil date.

Because of these variations, to know the exact Teras dates in March 2026 for your place, you should:

1. Check a reliable Jain Panchang / Patra for the year 2026.
2. Or use a Jain calendar app/website that lets you set your city and shows tithis.

If you tell me:

• Your city/country
• Whether you follow Digambar or Shwetambar calendar

then you can match that with a 2026 Jain Panchang very accurately.