Hey aspirant,
As per my information and reasearch I guess the last options for choice filling in josaa counselling is 15th October.
Also,for more details and information you can refer to the link mentioned below-
https://www.google.com/amp/s/engineering.careers360.com/articles/jee-main-counselling-seat-allotment/amp
Hope your query is cleared.
All the best!
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