Tamil calendar

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The Tamil calendar is one of the many traditional calendars in India. It is a solar calendar and is mainly used in the Indian state of Tamil Nadu and by the Tamils ​​in Sri Lanka .

history

The oldest references to chronology on the Indian subcontinent can be found in the Vedas , the oldest parts of which date back to around 1200 BC. Go back BC. The Jyotisha Vedanga with treatises on astronomy and astrology comes from a later period . Greek and West Asian knowledge influenced the Siddhantas (astronomical textbooks) in the first centuries AD. Especially the Arya-Siddhanta and the Yakkya-Karana form the basis of the Tamil calendar.

The year

The year is a sidereal year . In the Surya Siddhantas the length is given as 365.2587558 days (365 days 6 hours 12 minutes 36.5 seconds); other Siddhantas deviate from it by a few seconds. The actual value is 365.256360 days ( 365 days 6 hours 9 minutes 9.5 seconds ).

The year count

The years are counted according to the Kali Yuga era and according to the 60-year Jupiter cycle , in which each year has its own name. The government has been using the Tiruvalluvar era since 1981 (partly since 1971) .

The names of the years in the 60-year cycle are:

running Surname running Surname running Surname
No. tamil German No. tamil German No. tamil German
01 பிரபவ prabhava 21st சர்வசித்து sarvajit 41 பிலவங்க plavaṅga
02 விபவ vibhava 22nd சர்வதாரி sarvadhârin 42 கீலக kîlaka
03 சுக்ல śukla 23 விரோதி virôdhin 43 சௌமிய saumya
04 பிரமோதூத pramôda 24 விக்ருதி vikṛita 44 சாதாரண sâdhâraṇa
05 பிரசோற்பத்தி prajâpati 25th கர khara 45 விரோதகிருது virôdhakṛit
06 ஆங்கீரச aṅgiras 26th நந்தன nandana 46 பரிதாபி paridhâvin
07 ஸ்ரீமுக śrîmukha 27 விஜய vijaya 47 பிரமாதீச pramâdin
08 பவ bhâva 28 ஜய jaya 48 ஆனந்த ânanda
09 யுவ yuvan 29 மன்மத manmatha 49 ராட்சச râkshasa
10 தாது dhâtṛi 30th துன்முகி durmukha 50 நள anala
11 ஈஸ்வர îśvara 31 ஹேவிளம்பி hemalamba 51 பிங்கள pingala
12 வெகுதானிய bahudhânya 32 விளம்பி vilamba 52 காளயுக்தி kâlayukta
13 பிரமாதி pramâthin 33 விகாரி vicarin 53 சித்தார்த்தி siddhârthin
14th விக்கிரம vikrama 34 சார்வரி śarvarin 54 ரௌத்திரி raudra
15th விஷு vṛisha 35 பிலவ plava 55 துன்மதி durmati
16 சித்திரபானு chitrabhânu 36 சுபகிருது śubhakṛit 56 துந்துபி dundubhi
17th சுபானு subhânu 37 சோபகிருது śôbhana 57 ருத்ரோத்காரி rudhirôdgârin
18th தாரண târaṇa 38 குரோதி krôdhin 58 ரக்தாட்சி raktâksha
19th பார்த்திப pârthiva 39 விசுவாசுவ viśvâvasu 59 குரோதன krôdhana
20th விய vyaya 40 பரபாவ parâbhava 60 அட்சய kshaya

The beginning of the year

The beginning of the year is determined by the entry of the sun into the zodiac sign mêsha (Aries). the year then begins with the month of Chittirai. In 2008 the beginning of the year was changed to the month of Tai, but this change was so controversial that it was reversed in 2011.
In the post-Thiruvalluvar era year count used by the government, the year continues to begin with the month of Tai.

If the sun enters these signs of the zodiac between sunrise (beginning of the day) and sunset, the year begins on the same day, if the sun enters this sign of the zodiac between sunset and sunrise (end of day), the year begins the next day.

The circuit

There is no fixed switching scheme for years with 366 days, as the beginning of the year is determined by the entry of the sun into the zodiac sign Aries. Whether a year has 365 or 366 days can be seen from the astronomical data. The next years with 366 days are:

Kali Yuga Year in cycle year
tamil German Gregorian
5013 நந்தன nandana 2012-2013
5017 துன்முகி durmukha 2016-2017
5021 சார்வரி śarvarin 2020-2021
5024 சோபகிருது śôbhana 2023-2024
5028 பிலவங்க plavaṅga 2027-2028

The precision

With 365.2587558 days, the Siddhanta year is 0.0023958 days (3 minutes and 26 seconds) longer than the sidereal year with 365.256360 days. This means that it will shift against the fixed star sky by one day in around 400 years. The Siddhanta year with 365.2587558 days is 0.01656528 days (23 minutes and 51 seconds) longer than the tropical year with 365.24219052 days. This means that in around 60 years it will be shifted by one day compared to the seasons. The year currently starts around 23 days after the spring equinox.

The month

The path that the sun apparently travels in a sidereal year is divided into 12 signs of the zodiac of 30 ° each. Since the earth's orbit around the sun is an ellipse, the sun stands for different lengths of time in the individual signs of the zodiac, as the following table shows:

Zodiac signs Dwell time of the
sun in days
Western
zodiac
tamil German
மேஷம் mêsha 30.92557 Aries
ரிஷபம் vṛishabham 31.40334 bull
மிதுனம் mithuna 31.61057 Twins
கடகம் karka 31.47001 cancer
சிம்மம் siṁha 31.03613 lion
கன்னி kanyâ 30.45612 Virgin
துலாம் tulâ 29.90196 Libra
விருச்சிகம் vṛiśchika 29.50668 Scorpio
தனுசு dhanus 29.34806 Sagittarius
மகரம் makara 29.45446 Capricorn
கும்பம் kumbha 29.80668 Aquarius
மீனம் mîna 30.33917 fishes

The beginning of the month

The beginning of the month is determined by the entry of the sun into a new zodiac sign. If the sun enters the zodiac sign between sunrise (start of the day) and sunset, the month starts on the same day, if the sun enters the zodiac sign between sunset and sunrise (end of day), the month starts the next day.

The length of the month

During its apparent course, the sun stands for different lengths of time in the individual signs of the zodiac. The time varies between 29.34806 days (29 days 8 hours 21 minutes 12 seconds) and 31.61057 days (31 days 14 hours 39 minutes 13 seconds). Accordingly, a month lasts between 29 and 32 days, and a single month can have different lengths in different years.

The month names

The months were originally named after the Nakshatra lunar houses , where the sun entered a new zodiac sign. The months of the year have the following names and corresponding dates in the Gregorian calendar:

month கர / khara
(Thiruvalluvar 2041-2042)
நந்தன / nandana
(Thiruvalluvar 2042–2043)
விஜய / vijaya
(Thiruvalluvar 2043-2044)
ஜய / jaya
(Thiruvalluvar 2044–2045)
tamil German Gregorian
date
Number of
days
Gregorian
date
Number of
days
Gregorian
date
Number of
days
Gregorian
date
Number of
days
1 சித்திரை Chittirai 14th April 2011 31 14th April 2012 30th 14th April 2013 31 14th April 2014 31
1 வைகாசி Vaigâśi 15th May 2011 31 14th May 2012 32 15th May 2013 31 15th May 2014 31
1 ஆனி Âni 15th June 2011 32 15th June 2012 31 15th June 2013 31 15th June 2014 32
1 ஆடி Âḍi 17th July 2011 31 16. July 2012 31 16. July 2013 32 17th July 2014 31
1 ஆவணி Avaṇi 17th August 2011 31 16. August 2012 31 17th August 2013 31 17th August 2014 31
1 புரட்டாசி Puraṭṭâdi 17th September 2011 31 16. September 2012 31 17th September 2013 30th 17th September 2014 31
1 ஐப்பசி Aippaśi 18th October 2011 30th 17th October 2012 30th 17th October 2013 30th 18th October 2014 30th
1 கார்த்திகை Karttigai 17th November 2011 29 16. November 2012 30th 16. November 2013 30th 17th November 2014 29
1 மார்கழி Mârgaḷi 16. December 2011 30th 16. December 2012 29 16. December 2013 29 16. December 2014 30th
1 தை Tai 15th January 2012 29 14th January 2013 30th 14th January 2014 30th 15th January 2015 29
1 மாசி Mâśi 13. February 2012 30th 13. February 2013 29 13. February 2014 30th 13. February 2015 30th
1 பங்குனி Paṅguni 14th March 2012 31 14th March 2013 31 15th March 2014 30th 15th March 2015 30th
366 365 365 365

The days of a month are counted from 1 to 29 or 32. The Tamil numerals can be found under Tamil script , but they have almost completely been replaced by the number notation common in Europe.

The week

The week division is of Babylonian-Greek origin. The names are derived from the corresponding Indian deities. The names are listed in the following table:

tamil German in the Gregorian
calendar
திங்கள் Thingal Monday
செவ்வாய் Chevvai Tuesday
புதன் Puthan Wednesday
வியாழன் Vyalan Thursday
வெள்ளி Velli Friday
சனி Chany Saturday
ஞாயிறு Gnayaru Sunday

The day

The day lasts from sunrise to sunrise.

See also

literature

  • Friedrich Karl Ginzel : Handbook of mathematical and technical chronology. Volume 1: Calendar of the Babylonians, Egyptians, Mohammedans, Persians, Indians, Southeast Asians, Chinese, Japanese and Central Americans. Hinrichs, Leipzig 1906.
  • Leow Choon Lian: Indian Calendars. National University of Singapore, 2000/2001, quoted from http://www.math.nus.edu.sg/aslaksen/projects/lcl.pdf (here the page numbers are 6 larger) (accessed January 27, 2011).

Web links

Individual evidence

  1. Robert Sewell, Sankara Balkrishna Dikshit: The Indian Calendar: With tables for the conversion of Hindu and Muhammadan into AD dates, and vice versa (with tables of eclipses visible in India by Robert Schram) , London 1896, p. 8
  2. ^ Friedrich Karl Ginzel: Handbook of the mathematical and technical chronology. Volume 1: Calendar of the Babylonians, Egyptians, Mohammedans, Persians, Indians, Southeast Asians, Chinese, Japanese and Central Americans. Hinrichs, Leipzig 1906, p. 341
  3. Thiruvalluvar Day and Tamil Calendar based on Thiruvalluvar Day (read February 21, 2012)
  4. a b c d e Tamil Calendar and Daily Tamil Panchang Online (accessed February 6, 2012)
  5. ^ Friedrich Karl Ginzel: Handbook of the mathematical and technical chronology. Volume 1: Calendar of the Babylonians, Egyptians, Mohammedans, Persians, Indians, Southeast Asians, Chinese, Japanese and Central Americans. Hinrichs, Leipzig 1906, page 370
  6. Tamil Nadu Tamil New Year (Declaration) Repeal Act, 2011 (read January 26, 2012)
  7. ^ A b Leow Choon Lian: Indian Calendars. National University of Singapore, 2000/2001, quoted from Indian Calendars ( Memento from April 17, 2018 in the Internet Archive ) (here the page numbers are 6 larger) (accessed January 27, 2011), page 20
  8. Free Online Tamil Calendar (accessed on February 6, 2012)
    ( Tamil Calendar and Daily Tamil Panchang Online sometimes provides data that differ by 1 year)
  9. ^ A b Friedrich Karl Ginzel: Handbook of the mathematical and technical chronology. Volume 1: Calendar of the Babylonians, Egyptians, Mohammedans, Persians, Indians, Southeast Asians, Chinese, Japanese and Central Americans. Hinrichs, Leipzig 1906, page 342
  10. Zodiac names (accessed January 31, 2012)
  11. ^ After Friedrich Karl Ginzel: Handbook of mathematical and technical chronology. Volume 1: Calendar of the Babylonians, Egyptians, Mohammedans, Persians, Indians, Southeast Asians, Chinese, Japanese and Central Americans. Hinrichs, Leipzig 1906, page 339
  12. Tamil Calendar and Daily Tamil Panchang Online (accessed February 6, 2012)
    ( Free Online Tamil Calendar provides partially different data)
  13. Free Online Tamil Calendar (accessed February 5, 2012)
  14. Multilingual list of days of the week ( Memento of July 23, 2012 in the Internet Archive ) (accessed on February 6, 2012)