Answer

Varṣītap is an alternate-day Jain austerity: one day of full fasting and the next day of partial eating/biyāsan, traditionally begun on Fāgan dark 8th and completed on Vaiśākh bright 3rd. Because it follows your own fasting cycle, 10 October 2026 cannot be fixed universally as “upwas” or “biyasana” unless the Varṣītap start date is known. By inference, it will be whichever day in your alternate pattern falls on that date. ( jainpedia.org)

Explanation

For the Gregorian date itself, 10 October 2026 is Ashwina Amavasya and Saturday. That is the lunar/tithi position for the day, but it does not by itself decide the Varṣītap alternation. ( drikpanchang.com)

Takeaway

If you share the date on which your Varṣītap began, I can tell you exactly whether 10 October 2026 is your upwas day or biyasana day.