Usually, 1 Maasam (30-day/1 Month calendar) divided into two fortnights(15 days each).
Fullmoon (15days)
Amavasya (15days)
Tidhulu in Telugu Calendar:
After Full Moon After Amavasya
1. Paadyami (Not good) 1. Paadyami (Not Good)
2. Vidiya (Good) 2. Vidiya (Good)
3. Tadiya (Good) 3. Tadiya (Good)
4. Chaviti (Not Good 4. Chaviti (Not Good)
5. Panchami (Very Good) 5. Panchami (Good)
6. Shasti (Not Good) 6. Shasti (Not Good)
7. Saptami (Very Good ) 7. Saptami (Good)
8. Ashtami (Not Good) 8. Ashtami (Not Good)
9. Navami (Not Good) 9. Navami (Not Good)
10.Dasami (Good ) 10. Dasami (Best Period)
11.Ekadasi (Good ) 11.Ekadasi (Good )
12.Dwadasi ( Good) 12. Dwadasi (Good)
13.Trayodasi (Not Good) 13.Trayodasi (Good)
14.Chaturdasi (Not Good) 14.Chaturdasi (Good)
15.Amavasya (Not Good) 15.Pournami(BestPeriod)
