<Li> Year expired (default) or current </Li> <Li> Kartikadi (older or western India) or Chaitradi (modern Northern India). Kartikadi starts 7 months later in Kartika . Until 12th century Kartikadi year was common even in North India . </Li> <Li> Months Amanta (south) or Purminata (North). Amanta Chaitra Krishna Paksha is Purminata Vaishakh Krishna Paksha . For the Shukla Paksh, the month is the same . </Li> <P> Software named Pancanga is available to make the calculations . </P>

In which of these countries is bikram sambat the offical calander