A Bikrami, or Desi year, is a solar year which starts on the 13 of March, or the start of Spring, and consists of 365 days. Nine of its months consists of 30 days, one are of 31 (Visakh) and other two (Jeth, Har) are of 32 days. This calendar is in traditional use in Punjab

Punjab region

The Punjab , also spelled Panjab |water]]s"), is a geographical region straddling the border between Pakistan and India which includes Punjab province in Pakistan and the states of the Punjab, Haryana, Himachal Pradesh, Chandigarh and some northern parts of the National Capital Territory of Delhi...

 (both in India

India

India , officially the Republic of India , is a country in South Asia. It is the seventh-largest country by geographical area, the second-most populous country with over 1.2 billion people, and the most populous democracy in the world...

 and Pakistan

Pakistan

Pakistan , officially the Islamic Republic of Pakistan is a sovereign state in South Asia. It has a coastline along the Arabian Sea and the Gulf of Oman in the south and is bordered by Afghanistan and Iran in the west, India in the east and China in the far northeast. In the north, Tajikistan...

). Later the use was changed to other calendars including the Islamic calendar

Islamic calendar

The Hijri calendar , also known as the Muslim calendar or Islamic calendar , is a lunar calendar consisting of 12 lunar months in a year of 354 or 355 days. It is used to date events in many Muslim countries , and used by Muslims everywhere to determine the proper day on which to celebrate Islamic...

, the Nanakshahi calendar

Nanakshahi calendar

The Nanakshahi calendar is a tropical solar calendar that was adopted by the Shiromani Gurdwara Prabhandak Committee to determine the dates for important Sikh events. It was designed by Pal Singh Purewal to replace the Saka calendar and has been in use since 1998...

 and the Gregorian Calendar

Gregorian calendar

The Gregorian calendar, also known as the Western calendar, or Christian calendar, is the internationally accepted civil calendar. It was introduced by Pope Gregory XIII, after whom the calendar was named, by a decree signed on 24 February 1582, a papal bull known by its opening words Inter...

.

The names of months are

S.No.	Month Name	Duration
1.	Chetar	Mid of March to Mid of April
2.	Visakh	Mid of April to Mid of May
3.	Jeth	Mid of May to Mid of June
4.	Har	Mid of June to Mid of July
5.	Sawan	Mid of July to Mid of August
6.	Bhadon	Mid of August to Mid of September
7.	Asoo	Mid of September to Mid of October
8.	Katten	Mid of October to Mid of November
9.	Maghar	Mid of Novemberto Mid of December
10.	Poh	Mid of December Mid of January
11.	Magh	Mid of January Mid of February
12.	Phaggan	Mid of February to Mid of March

A day consists of 8 Pahars, every Pahar equals to 3 hours of the modern clock. These Pahars are named:
1: Sajar vela or Sver vela = Morning/Day-break (6'o clock to 9'o clock).
2: Dhammi vela = Pre- noon time(9'o clock to 12'o clock).
3: Paishee vela = Noon(12'o clock to 3'o clock).
4: Deegar vela = Afternoon(3'o clock to 6'o clock).
5: nimasheen/namashan vela = Sunset + Evening + Early hours of night(6'o clock to 9'o clock).
6: Raat vela = Pre-midnight time (9'o clock to 12'o clock).
7: Adh Raat vela = Midnight to 3'o clock (12'o clock to 3'o clock).
8: Sarghee vela = Pre Dawn/Very early morning before the sunrise(3'o clock to 6'o clock).
The word vela which may be spelled as vailaa means "time of the day" whereas the word Adh means half.