In Jain dharma there is no single fixed, universal list of days in “March” when everyone must do upvas or biyashan every year. Dates change every year with the lunar tithi and also differ slightly by:

• Country / city (sunrise–sunset times)
• Panchang you follow (Digambar / Shwetambar, different sanghs)
• Your own guru / family niyam

So I cannot honestly give you one ready‑made date list for “March” without your year, place and panchang.

Below is simple, practical guidance so you can plan correctly:

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1. Meaning of upvas and biyashan

• Upvas – full fast with no food (many also avoid water, or take only boiled water within set time, depending on niyam).
• Biyashan (be‑ashan) – only two proper meals in the day, usually:

- No snacks in between - Simple, saatvik food, prepared once (or with as much asmita/ahimsa as possible) - Often combined with other rules: no green vegetables, no sweets, etc., as per niyam.

Both are anushthan taken for atmashuddhi, not just for calendar counting.

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2. Common Jain practice in the month of March

The civil month “March” usually covers part of Falgun and Chaitra in the Jain (Vikram Samvat) calendar.

Most families choose upvas / biyashan on:

1. Regular tithi‑based days

- Aatham (8th) and Chaudas (14th) of each paksh - Sometimes on Poonam (15th) or Amaavasya (30th) as well - Some keep upvas, others biyashan, some do ayambil.

1. Special Jain periods that often fall in March

- Navpad Oli / Ayambil Oli (Chaitra Oli) – 9 (or 18) days: - Many do daily ayambil. - Those who cannot, sometimes do upvas or biyashan on some or all of these days, depending on health and guidance. - Any Kalyanak days (of Tirthankars) that fall in this month – some do upvas on those days.

Because these events are based on tithis, their English dates in March change every year.

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3. How you should fix your March upvas / biyashan

To decide exact dates for this coming March:

1. Take the Jain panchang (Digambar or Shwetambar) that your family/sangh follows.
2. Mark in March:

- Both Aatham (Sud 8, Vad 8) - Both Chaudas (Sud 14, Vad 14) - All Navpad Oli / Ayambil Oli days that fall in March - Any Kalyanak / major Jain parva days

1. Now set your niyam, for example:

- Upvas on: both Aatham + both Chaudas, and on important Kalyanak days. - Biyashan on: all other Oli days, or all remaining tithis you can comfortably manage.

If you follow a guru / sadhu / samaj:

• Always give first preference to the niyam given by them.

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4. If you want a ready list for your family

The safest and most dharmic way is:

• Ask at your local Jain derasar / sangh:

They usually print a small yearly calendar with: - Tithis - Important parvas - Often they mark recommended upvas / biyashan / ayambil days.

• Then simply follow that calendar for March.

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If you tell your tradition (Digambar/Shwetambar) and which city and year’s March you mean, a local panchang or guru can give you exact Gregorian dates. Without that, any exact date list from me would risk being wrong, so I have kept the answer principled and safe for your dharmic practice.