Complex sentence: Today the majority of Parsis are adherents of the Parsi version of the "Shahenshahi" calendar although the "Kadmi" calendar does have its adherents among the Parsi communities of Surat and Bharuch.
Split into simpler sentences: Today the majority of Parsis are adherents of the Parsi version of the "Shahenshahi" calendar. The "Kadmi" calendar has adherents among the Parsi communities of Surat and Bharuch.