Tithi is the date according to the Hindu lunar calendar. The Hindu lunar calendar consists of a dark and a bright fortnight also called Krishna paksha and Shukla Paksha. Tithi is said to be complete when moon has 12 degree from the sun. when moon complete 12 degree each time one tithi is comptete. There are 30 tithis in a lunar month. There are several rituals and festivals associated with Tithis. Most of the festivals fall on the new moon day (amavsaya) or the full moon day (poornma). It is important to note that starting or ending of a Tithi depends upon the degree of Moon from that of Sun therefore a Tithi ends or starts at any time in a day not like the Modern Time when a date changes at midnight.
There are 30 tithis in a lunar month. In Indian Astrology, the calculation of the Tithis starts from Pratipada (The first day in each half of the lunar month) of the Shukla-Paksha. Tithis are as follows :The Hindu Tithis are classified into 8 types:
Nanda Tithi – Bestows happiness, enjoyment.
Bhadra Tithi - Auspicious for stating new work
Jaya Tithi - Auspicious for winning over enemies.
Rikta Tithi – To be avoided for any important work.
Poorna Tithi – Auspicious to complete all jobs.
Dagdha Tithi--Inauspicious, fear of hurdles, obstructing the accomplishment of the work.
Visha Tithi--inauspicious, fear of hurdles, obstructing the accomplishment of the work.
Hutashan Tithi--inauspicious, fear of hurdles, obstructing the accomplishment of the work.2. Nakshatra:
Sunday - Bharani
Monday - Chitra
Tuesday - Uttarashadha
Wednesday - Dhanishtha
Thursday - Uttaraphalguni
Friday - Jyeshtha
Saturday – Revati
Nakshtra also indicate Yoni, Gana and Nadi of an individual.
1. Deva: (Divine)
2. Manav: (Human)
3. Rakshas: (Demon)Nakshatras assigned to each Ganas are as follows:Nadi: There are 3 Nadis :
1. Adi: (Vata)
2. Madhya: (Pitta)
3. Antya: (Kapha or Shleshma)
Nakshatras assigned to each Nadi are as follows:3. Yoga:
A Yoga is obtained from the sum of the Nirayna Longitude of the Moon and Sun and the sum is divided into 27 parts of 13°20' each. There are 27 yogas :Ganda, Vyatipata, Atiganda, shoola are considered inauspicious yoga.
5. Vaar (day of the week) :