This is the only festival for the brahmin gents. Generally it comes in tamil month Aadi. Once the new moon day of Aadi month completes and full moon day comes, yajur avani avittam will come. For Rig veda brahmins it comes in the day prior to full moon day and that day should be a chathurthi day. In some occasions, both will fall on the same day. For sama veda brahmins, avani avittam will come on the day of vinayaka chaturthi or the previous day.
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