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Thrayodashi is the Sanskrit word for "thirteen", and is the thirteenth day in the lunar fortnight ( Paksha ) of the Hindu calendar. Each month has two Thrayodashi days, being the thirteenth day of the "bright" (Shukla) and of the "dark" (Krishna) fortnights respectively. Thus Thrayodashi occurs on the thirteenth and the twenty-eighth day of each month.

Sanskrit ancient Indian language

Sanskrit is a language of ancient India with a history going back about 3,500 years. It is the primary liturgical language of Hinduism and the predominant language of most works of Hindu philosophy as well as some of the principal texts of Buddhism and Jainism. Sanskrit, in its variants and numerous dialects, was the lingua franca of ancient and medieval India. In the early 1st millennium CE, along with Buddhism and Hinduism, Sanskrit migrated to Southeast Asia, parts of East Asia and Central Asia, emerging as a language of high culture and of local ruling elites in these regions.

Paksha refers to a fortnight or a lunar phase in a month of the Hindu lunar calendar.

Hindu calendar is a collective term for the various lunisolar calendars traditionally used in India. They adopt a similar underlying concept for timekeeping, but differ in their relative emphasis to moon cycle or the sun cycle and the names of months and when they consider the New Year to start. Of the various regional calendars, the most studied and known Hindu calendars are the Shalivahana Shaka found in South India, Vikram Samvat (Bikrami) found in North and Central regions of India, Tamil calendar used in Tamil Nadu, and the Bengali calendar used in the Bengal – all of which emphasize the lunar cycle. Their new year starts in spring, with their heritage dating back to 1st millennium BCE. In contrast, in regions such as Kerala, the solar cycle is emphasized and this is called the Malayalam calendar, their new year starts in autumn, and these have origins in the second half of the 1st millennium CE. A Hindu calendar is sometimes referred to as Panchanga (पञ्चाङ्ग).


Dhanteras, also known as Dhanatrayodashi or Dhanvantari Trayodashi, is the first day that marks the festival of Diwali in India and the festival of Tihar in Nepal.

Diwali Hindu festival of lights

Diwali, Deepavali or Dipavali is Hindu and Jain festival of lights, which is celebrated every autumn in the northern hemisphere. One of the most popular festivals of Hinduism, Diwali symbolises the spiritual "victory of light over darkness, good over evil and knowledge over ignorance." Light is a metaphor for knowledge and consciousness. During the celebration, temples, homes, shops and office buildings are brightly illuminated. The preparations, and rituals, for the festival typically last five days, with the climax occurring on the third day coinciding with the darkest night of the Hindu lunisolar month Kartika. In the Gregorian calendar, the festival generally falls between mid-October and mid-November.

Ashwin or Ashvin, also known as Aswayuja, is the seventh month of the lunisolar Hindu calendar, the Vikram Samvat, which is the official solar calendar of Nepal and the parts of India. It is the sixth month in the solar Bengali calendar and seventh in the lunar Indian national calendar of the Deccan Plateau. It falls in the season of Shôrot, or Autumn. In Vedic Jyotish, Ashwin begins with the Sun's enter in Virgo.

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Friday the 13th day in which the 13th of a month is on a Friday

Friday the 13th is considered an unlucky day in Western superstition. It occurs when the 13th day of the month in the Gregorian calendar falls on a Friday, which happens at least once every year but can occur up to three times in the same year,for example in 2015, on 13 February, 13 March and 13 November. In 2017, it occurred twice, on 13 January and 13 October. In 2018, it also occurred twice, on 13 April and 13 July. There will be two Friday the 13ths every year until 2020; 2021 and 2022 will have just one occurrence each.

The saros is a period of approximately 223 synodic months, that can be used to predict eclipses of the Sun and Moon. One saros period after an eclipse, the Sun, Earth, and Moon return to approximately the same relative geometry, a near straight line, and a nearly identical eclipse will occur, in what is referred to as an eclipse cycle. A sar is one half of a saros.

A fortnight is a unit of time equal to 14 days. The word derives from the Old English: fēowertyne niht, meaning "fourteen nights".

Dhanvantari god of Ayurvedic medicine and physician of the gods

Dhanvantari is the Hindu god of medicine and an avatar of Lord Vishnu. He is mentioned in the Puranas as the god of Ayurveda. He, during the Samudramanthan arose from the Ocean of Milk with the nectar of immortality. It is common practice in Hinduism for worshipers to pray to Dhanvantari seeking his blessings for sound health for themselves and/or others, especially on Dhanteras or Dhanwantari Trayodashi. The Indian Government has declared that Dhanwantari Trayodashii Kumara every year would be celebrated as "National Ayurveda Day".

This article lists the traditional festivals and other cultural events in the Odisha region of India.

An eclipse season is one of only two periods during each year when eclipses can occur, due to the variation in the orbital inclination of the Moon. Each season lasts about 35 days and repeats just short of six months later, thus two full eclipse seasons always occur each year. Either two or three eclipses happen each eclipse season. During the eclipse season, the inclination of the Moon's orbit is low, hence the Sun, Moon, and Earth become aligned straight enough for an eclipse to occur.

Purnima last day of the bright lunar fortnight

Purnima is the Indian and Nepali word for full moon, while in Indonesian it is known as Purnama. The day of Purnima is the day (Tithi) in each month when the full moon occurs, and marks the division in each month between the two lunar fortnights (Paksha).

Prathama is the Sanskrit word for "first", and is the first day in the lunar fortnight (Paksha) of the Hindu calendar. Prathama is also known as Pratipada in West Bengal, Odisha and western India. Each month has two Prathama days, being the first day of the "bright" (Shukla) and of the "dark" (Krishna) fortnights respectively. Thus Prathama occurs on the first and the sixteenth day of each month. It is also known as Pratipad or Pratipada.

Dwitiya also referred to as Beej and Dooj is the Sanskrit word for "second", and is the second day in the lunar fortnight (Paksha) of the Hindu calendar. Each month has two Dwitiya days, being the second day of the "bright" (Shukla) and of the "dark" (Krishna) fortnights respectively. Thus Dwitiya occurs on the second and the seventeenth day of each month.

Tritiya is the third day in the lunar fortnight (Paksha) of the Hindu calendar. Each month has two Tritiya days, being the third day of the "bright" (Shukla) and of the "dark" (Krishna) fortnights respectively. Thus Tritiya occurs on the third and the eighteenth day of each month.

Dashami is the Sanskrit word for "ten", and is the tenth day in the lunar fortnight (Paksha) of the Hindu calendar. Each month has two Dashami days, being the tenth day of the "bright" (Shukla) and of the "dark" (Krishna) fortnights respectively. Thus Dashami occurs on the tenth and the twenty-fifth day of each month.


Mohani is one of the most important festivals among the Newars which involves a packed itinerary of religious services, pilgrimages, family gatherings and outdoor celebrations lasting several days. Special dinners known as Nakhtya (नख्त्या), to which all the relatives are invited, continue for weeks later. Mohani is the equivalent of Nepal's biggest festival Dasain, and there are similarities and differences between the two.

Kachhala (month) month in Nepal Sambat

Kachhalā is the first month in the Nepal Era calendar, the national lunar calendar of Nepal. The month corresponds to Kārtik in the Hindu lunar calendar and roughly matches November in the Gregorian calendar.

Chilla (month) month in Nepal Sambat

Chillā is the fifth month in the Nepal Era calendar, the national lunar calendar of Nepal. The month coincides with Phalguna (फागुन) in the Hindu lunar calendar and March in the Gregorian calendar.

Chaulā is the sixth month in the Nepal Era calendar, the national lunar calendar of Nepal. The month coincides with Chaitra (चैत्र) in the Hindu lunar calendar and April in the Gregorian calendar.

Jain festivals occur on designated days of the year. Jain festivals are either related to life events of Tirthankara or they are performed with intention of purification of soul.


  1. Aurobinda Prasad Gayan (17 October 2017). "Happy Dhanteras! But is it really a good day to buy gold?". Economic Times . Retrieved 19 October 2017.