There are many theories regarding the origin of the era, but according to recent scholarship, it commemorated the foundation of Kollam after the liberation of the region (known as Venadu) from the Pandya rule by or with the assistance of the Chera king at Kodungallur. The earliest record mentioning Kollam Era is a royal order by Sri Vallava Goda, the chieftain of Venadu, dated to c. 973 AD (Kollam Era 149). In the inscription the phrase "Kollam Tontri Andu" is employed. Kollam Era initially remained a local era in the port of Kollam alone and perhaps in the whole chiefdom of Venadu. Later it spread through out Kerala and came to be known as the Malayalam Era.
Another era referred to as "Kollam Azhinta Andu", counting from 1097 AD, was reckoned by the Pandyas for some time. It is tentatively calculated that the Pandya kings, under the sanction of their Chola overlords, captured the port of Kollam in 1097 AD.
- The Kollam era is attributed to the legend of the hero Paraśurāma, an avatar (incarnation) of the god Vishnu. It is sometimes divided into cycles of 1,000 years reckoned from 1176 BC. Thus, 825 AD would have been the first year of the era's third millennium. Paraśurāma, was however, a contemporary of Rāma, whose birth date is estimated to be in 5114 BC (if not earlier). It is, therefore, unclear if the Paraśurāma associated with the Kollam era is the same as the Paraśurāma of Rāmāyana.
- The news of the physical disappearance of Sri Adi Shankaracharya in 820 AD at Kedarnath reached Kerala only a few years later. It is believed that Kerala began the Malayalam era, also called the Kollam era, in 825 AD in his memory. There is, however, a differing opinion that Sri Adi Shankaracharya was born in 509 BC and died in 477 BC.
- The origin of Kollam Era has been dated to 825 AD, when the great convention in Kollam was held at the behest of King Kulashekhara. Kollam was an important town in that period, and the Malayalam Era is called 'Kollavarsham', possibly as a result of the Tharisapalli plates.
- According to Hermann Gundert, Kollavarsham started as part of erecting a new Shiva Temple in Kollam and because of the strictly local and religious background, the other regions did not follow this system at first. Once Kollam port emerged as an important trade center, however, the other countries also started to follow the new system of calendar. This theory backs the remarks of Ibn Battuta as well.
- It is believed that the era was started by the Syrian saints Mar Sabor and Mar Proth who settled in Korukeni, Kollam, near to the present Kollam.
The Malayalam months follows the Sanskritic Sauramāsa (solar month) naming convention. Thus, Chingam is named after the corresponding Sanskrit solar month, the Simham, and so on. This is unlike the case in Tulu calendar which follow the names of lunar months. The following are the months of the astronomical Malayalam calendar:
|No.||Months in Malayalam Era||In Malayalam||Sanskrit solar month||Gregorian Calendar||Tulu calendar||Tamil calendar||Saka era||Sign of Zodiac|
The days of the week in the Malayalam calendar are suffixed with Aazhcha (ആഴ്ച), meaning week.
|1.||Njayar||ഞായർ||Bhānu vāsara||Sunday||Bhanuvara||Nyaayiru (ஞாயிறு)||Ravivar||al-aḥad||Ravivara (ੜਰਿਰਾਹ)|
|2.||Thinkal||തിങ്കൾ||Soma vāsara||Monday||Somavara||Thingal (திங்கள்)||Somvar||al-ithnayn||Sovara (ਸੋਰਾਹਾ)|
|3.||Chowva||ചൊവ്വ||Maṅgala vāsara||Tuesday||Mangalavara||Chevvai (செவ்வாய்)||Mangalvar||al-thalāthāʾ||Mangla Var (ਝੱਗਲਾ ਰਾਥ)|
|4.||Budhan||ബുധൻ||Budha vāsara||Wednesday||Budhavara||Budhan (புதன்)||Budhvar||al-arbaʿā||Budhvarʾ (ਬੁਦ੍ਝਰਾਹ)|
|5.||Vyazham||വ്യാഴം||Guru vāsara||Thursday||Guruvara||Vyazhan (வியாழன்)||Guruvar||al-khamīs||Gurūvar (ਗੁਰੂ ਹਾਰ)|
|6.||Velli||വെള്ളി||Śukra vāsara||Friday||Shukravara||Velli (வெள்ளி)||Sukravar||al-jumuʿah||Ta visvar (ਤਾਂ ਹਿਥਹਾਹ)|
|7.||Shani||ശനി||Śani vāsara||Saturday||Shanivara||Shani (சனி)||Shanivar||al-sabt||Sanivar (ਸਯੀਰਾਥ।)|
Like the months above, there are twenty seven stars starting from Aswati (Ashvinī in Sanskrit) and ending in Revatī. The 365 days of the year are divided into groups of fourteen days called Ñattuvela (ഞാറ്റുവേല), each one bearing the name of a star.
Vishu (വിഷു), celebrated on the 1st of Metam, and Onam (ഓണം), celebrated on the star Thiruvonam [t̪iruʋoːɳəm] in the month of Chingam, there are two of the major festivals in Kerala. In Indian astrology, the passing of the sun into Aries at the vernal equinox on Metam 1, now calculated to fall on April 14, is generally celebrated as Vishu (derived from the Sanskrit Maha Vishuva Sankranti, the word "sanGkrAnti" सङ्क्रान्ति meaning "transference or transition to"), and was considered a candidate for marking the start of a year. However, a conference of astronomers that the king Udaya Marthanda Varma summoned in 825 AD, resolved to start the New Year on the first of Chingam (in mid-August). While Cochin, Madurai, Tirunelveli and Ceylon followed suit, Palghat and North Kerala retained another ancient mode of reckoning the New Year from the first day of Kanni (Virgo) in September.
The Makaravilakku festival is celebrated in the Ayyappa Temple at Sabarimala on the 1st day of month Makaram. This marks the grand finale of the two-month period to the Sabarimala pilgrimage. The 1st of Makaram marks the Winter Solstice (Uttarayanam) and the 1st of Karkaṭakam marks the summer solstice (Dakshinayanam) according to the Malayalam calendar. (According to the astronomical calendar the summer solstice is on June 21, and the winter solstice on December 21.)
Chaitram 1 (usually coinciding with March 20) or Metam 1 (mostly coinciding with April 14, for 2019 it was on April 15th), both in the proximity of the date of the vernal equinox (March 21), mark the beginning of the new year in many traditional Indian calendars such as the Indian National calendar and the Tamil calendar. When the Government of Kerala adopted Kolla Varsham as the regional calendar, the 1st of Chingam, the month of the festival of Onam, was accepted as the Malayalam New Year instead.
Many events in Kerala are related to the dates in the Malayalam calendar.
The agricultural activities of Kerala are centred on the seasons. The southwest monsoon which starts around 1 June is known as Etavappathi, meaning mid-Etavam. The northeast monsoon which starts during mid October is called thulavarsham (rain in the month of thulam). The two harvests of paddy are called Kannikkoythu and Makarakkoythu (harvests in the months kanni and makaram) respectively.
- "Kollam Era" (PDF). Indian Journal History of Science. Archived from the original (PDF) on 27 May 2015. Retrieved 30 December 2014.
- Broughton Richmond (1956), Time measurement and calendar construction, p. 218
- R. Leela Devi (1986). History of Kerala. Vidyarthi Mithram Press & Book Depot. p. 408.
- Noburu Karashmia (ed.), A Concise History of South India: Issues and Interpretations. New Delhi: Oxford University Press, 2014. 89.
- Narayanan, M. G. S. Perumāḷs of Kerala. Thrissur (Kerala): CosmoBooks, 2013. 74-76, 143.
- "The Kollam Calendar Mystery – A discussion".
- "'Lord Ram was born in 5114 BC' - Times of India".
- Kalady: The Triumph of Faith Over Time. Dir. Rajesh Krishnan, K. Anand, and S. Thyagarajan. Sri Shankara Advaita Research Center, Sringeri, May 31, 2010. DVD.
- sharadapeetham (25 April 2012). "Kalady: The Triumph of Faith Over Time (Rediscovery of Sri Adi Shankaracharya's Birth Place)" – via YouTube.
- K. V. Sarma, Kollam Era, Indian Journal of History of Science, 31(1), 1996, pp. 93-100
- "Year of Birth of Adi Shankaracharya – 509 BC, 44 BC, 788 AD". www.hindu-blog.com.
- A. Sreedhara Menon (2007) . "CHAPTER VIII - THE KOLLAM ERA". A Survey Of Kerala History. DC Books, Kottayam. pp. 104–110. ISBN 81-264-1578-9. Retrieved 7 August 2013.
- "Kollam - Short History". Statistical Data. kerala.gov.in. Archived from the original (Short History) on 21 November 2007. Retrieved 8 October 2014.
- Kerala government website Archived 2007-11-21 at the Wayback Machine
- In the Travancore State Manual, Ch:XIII, pages 49-50, by Sri. T.K. Velu Pillai according to keralainfoservice
- "Boloji.com - A Study in Diversity - News, Views, Analysis, Literature, Poetry, Features - Express Yourself". www.boloji.com.
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