There are 15 Tithis as widely known, 15 Tithis in the Dark Half of Moon and 15 Tithis in the Bright Half of Moon.
Vriddhi Tithi : The Tithi which is present at the time of Sunrise on first day and also on the second day sunrise is called Vriddhi Tithi.
Kshaya Tithi : The Tithi which starts after first sunrise and ends before second sun rise is called Kshaya Tithi.
Pratipada or Padyami. The Chandra Kala is Amrita. The presiding deity of the 1st Tithi is Brahma. It is a Nanda tithi which bestows happiness. It is auspicious for all types of religious and auspicious ceremonies, festivals, journeys, wedding, installation, observing a vow, accepting honors or a position, activities related to real estate and hair cutting.
2.Dwitiya or Vidiya. The Chandra Kala is Manada. Vidhata rules this 2nd Tithi. It is a Bhadra tithi which is good for starting any new work. Good for laying the foundation of house, factory, and other things of a permanent nature. Good for wedding, starting a job or any duty or the beginning of any work and wearing jewelry.
3. Tritiya. The Chandra Kala is Poosha. Vishnu is the lord of this Tithi. It is a Jaya Tithi and bestows victory. Auspicious day to start important businesses, wedding, the first music lesson, the first feeding of a child, construction. Good for the cuttings of one’s hair and nails and shaving.
4. Chaturthi. The Chandra Kala is Tusthi. Yama is lord of the 4th Tithi. It is a Rikta Tithi and not good for auspicious works. Good for the destruction of one’s enemies, the removal of obstacles, acts of combat, cleaning of the house, polishing, arguments, fight with the enemies, use of weapons and fire. Inauspicious day to start any important businesses.
5. Panchami. The Chandra Kala is Pusthi. The Moon rules this 5th Tithi. It is a Poorna Tithi and good for completing any work. Favourable for administering medicine, the purging of poisons and surgery. Auspicious day to start important businesses, wedding and healing.
6. Shasthi. Chandra Kala is Rati. Karttikeya presides over this 6th Tithi. It is a Nanda tithi which bestows happiness. Favourable for Coronation, Construction, activities related to the houses and real estate, jewelery making, starting friendship and starting war. Not very auspicious for marriage.
7. Saptami. The Chandra Kala is Dhruti. The 7th Tithi is ruled by Indra . It is a Bhadra Tithi which is good for starting any new work. Activities, related to transportation; Buying conveyances, wedding, music, dance, debate, decoration and ornaments; the beginning of a journey, starting a war and physical exercise.
8. Ashthami. The Chandra Kala is Sasichini. The Vasus rule this 8th Tithi. It is a Jaya Tithi and bestows victory. Good for taking up arms, building of one’s defenses, and fortification, architecture, debate, dance . Auspicious day to start important businesses, sport, studying arts, activities related to houses and estates, studying and construction.
9. Navami. The Chandra Kala is Chandrika. The Serpent rules this 9th Tithi. It is a Rikta Tithi and not good for auspicious works. Suitable for killing enemies, acts of destruction, and violence. Inauspicious day for important businesses. Good for arguments, competition, physical exercising, shooting etc. marksmanship and work with tools.
10. Dasami. The Chandra Kala is Kanta. This 10th Tithi is ruled by Dharma. It is a Poorna Tithi and good for completing any work. Good for acts of virtue, religious functions, spiritual practices, and other pious activities, entering a home, to start important businesses, wedding, wearing jewels, journeys, activities, related to transportation, vehicles, houses and meeting important people.
11. Ekadasi. The Chandra Kala is Jyostna. Rudra rules this 11th Tithi. It is a Nanda tithi which bestows happiness. Fasting, worship, fulfilling promises, wedding, arguments, physical exercises, construction, pilgrimage, spiritual holidays, festivities, observing vows, decorating, arrival and departure.
12. Dwadasi. The Chandra Kala is Shree. The Sun rules this 12th Tithi. It is a Bhadra Tithi which is good for starting any new work. Auspicious for all religious ceremonies, the lighting of the sacred fire, and the performance of one’s duties. Fulfillment of promises, other auspicious activities. Avoiding taking oil bath and journeys. Wedding is not very auspicious.
13. Trayodasi. The Chandra Kala is Priti. The 13th Tithi is ruled by Cupid. Also called Pradosham and very good for Pooja of Lord Shiva. It is a Jaya Tithi and bestows victory. Auspicious day to start important businesses, wearing new clothes and jewels, struggle, fulfillment of promises, starting a war, observing vows and sensual pleasures. 14.Chaturdasi. The Chandra Kala is Angada. Kali rules this 14th. It is a Rikta Tithi and not good for auspicious works. Suitable for administering poison and calling of elements and spirits. Inauspicious day for any important businesses. Only do routine work and read scriptures. Avoid journeys, hair cutting and manicure.
15. Amavasya. The Chandra Kala is Poorna. The Viswadevas rule this 15th Tithi. It is a Poorna Tithi but generally considered not good for any work except religious ceremonies and worship. Inauspicious day for any work except religious ceremonies, charity and performing rites for the departed.
15. Poornima. The Chandra Kala is Poorna. The Viswadevas rule this 15th Tithi. It is a Poorna Tithi and generally considered good for completing any work. Auspicious day to start important businesses, constructions, accepting a position, the beginning of work, spiritual ceremonies, household work and physical activities.