Complex sentence: The other popular era in India and some adjacent countries is Vikrama Samwat (विक्रम संवत), which follows a calculation of time by observing a complex fusion of lunar and solar calendars.
Split into simpler sentences: The other popular era in India and some of the adjacent countries is Vikrama Samwat (विक्रम संवत). The Vikrama Samwat follows a calculation of time by observing a complex fusion of lunar and solar calendars.