26 July 2021 is First Shravan Somvar in North Indian Hindi calendars. In Marathi, Gujarati, Telugu and Kannada calendars, it is on August 9. And in Nepali calendar, first Shravan Somvar Vrat date is July 26.
26 July falls on Krishna Paksha Tritiya in Shravan Month as per North Indian Hindi calendars; in Ashada Month as per Purnimant Panchangams. 9 August falls on Shukla Paksha Pratipada in Shravan Month as per all Hindu calendars.
In North Indian calendars, Shravan Month begins on July 25 and ends on August 22.
As per Telugu, Kannada, Marathi & Gujarati calendars, Shravan Maas 2021 begins on August 9 and ends on September 7.