bikram samvat the official calender of which country
Vikram Samvat Vikram Samvat (Hindi: विक्रम सम्वत्) (abbreviated as V.S. (or VS) or B.S. (or BS));  Listen (help·info)) is the historical and official Hindu calendar of Nepal. It uses lunar months and solar sidereal year (see: Vedic time keeping).
ICD-10 Work on ICD-10 began in 1983 and was completed in 1992.[1]
Fist of the Blue Sky On October 24, 2017, it was announced that
Gregorian calendar The Gregorian calendar is internationally the most widely used civil calendar.[1][2][Note 1] It is named after Pope Gregory XIII, who introduced it in October 1582.