Panchang

Panchang is Indian Calendar based on position of planets in zodiac signs and Nakshatras
Panchang is made up with five terms namely;
• Tithi
• Weekday (Vara)
• Star (Nakshatra)
• Yoga
• Karna
TITHI is said to be complete when moon has 12 degree from the sun. When moon completes 12 degree each time, one tithi is calculated. Moon completes 360 degrees in 30 tithi (days). In Indian calendar a mass (month) is of 30 day based on moon transit. A complete circle of moon is visible in form of full moon day and no moon day. From Partipada to Poornima it is called as Sukla Paksha and from Pratipada to Amavasya it is called as Krishna Paksha. The period when moon is increasing is called the Bright Half (Sukla Paksha) and the period when moon is decreasing is called the Dark Half (Krishna Paksha).

Tithi

Bright Half ( Sukl Paksha)
1. Pratipada
2. Dwitya
3. Tratiya
4. Chaturthi
5. Panchami
6. Shashthi
7. Saptami
8. Ashtami
9. Nwami
10. Dashmi
11. Ekadasi
12. Dwadasi
13. Trayodashi
14. Chaturdashi
15. Poornima
Dark Half ( Krishn Paksha)
1. Pratipada
2. Dwitya
3. Tratiya
4. Chaturthi
5. Panchami
6. Shashthi
7. Saptami
8. Ashtami
9. Nawami
10. Dashmi
11. Ekadasi
12. Dwadasi
13. Trayodashi
14. Chaturdashi
15. Amavasya

WEEKDAY (Vara)
There are 7 days in a week, Sunday to Saturday.
Ravivar, Somvar, Mangalvar, Budhvar, Guruvar, Shukravar & Shanivar

STAR (Nakshatra)
There are 27 stars. The zodiac is divided into this star of 13.20 degrees each. Each star is further sub divided into 4 parts known as quarter and its degree is 03.20

YOGA
It is a period during which the joint motion of longitudes of sun and moon amounts to 13 degree of arc. There are 27 yogas.

KARNA
Half of a Tithi is called Karan. A karna occurs only when there is difference of 6 degrees in between logitudes of Sun and Moon. There are 11. karnas. Bava, Balava, Kaulava, Taitil, Gara, Vanija, Vishti, Shakuni, Chatushpada, Naga, Kishtunghana