When you should start fasting for Thursday and for how many days?
You can begin fasting on any Thursday besides in the long stretch of Paush. It very well may be begun the main Thursday of Shukla Paksha of any month.
The fast should be observed for 16th Thursdays and do the udyapan on 17th Thursday. Men can observe the fast continuously till 16th Thursday but women can skip the fasting if they are on their periods (menstrual cycle).
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