Nanakshahi calendar designed by Pal Singh Purewal to replace the Bikrami calendar. The epoch of this calendar is the birth of the first Sikh Guru, Nanak Dev in 1469 and the Nanakshahi year commences on 1 Chet. New Year's Day falls annually on what is March 14 in the Gregorian Western calendar. The start of each month is fixed. According to Kapel (2006), the solar accuracy of the Nanakshahi calendar is linked to the Gregorian civil calendar. This is because the Nanaskhahi calendar uses the tropical year instead of using the sidereal year which is used in the Bikrami calendar or the
Kartik (month) name of the month is derived from the name of the star Krittika (কৃত্তিকা). It marks the start of the dry season ( "Hemôntô"). "Kārttikai" (கார்த்திகை, ) is the eighth month of the Tamil calendar used by Tamils across the world. It corresponds to November/December in the Gregorian calendar. It begins when the sun enters the sign of Scorpio. Many festivals, such as Karthikai Deepam, are celebrated in this month. The name of the month is derived from a star, "kārttikai" (கார்த்திகை). According to the Bikram Sambat calendar of Nepal, which is also the country's official calendar, Kartik is the