Special Tithi

Ashtamee
All Ashtamee falling on Wednesday - Budh Ashtamee

Navamee
Navamee (Navami, or Navmi, or Naumi, or Naumee) is the ninth day in every fortnight or Paksh in Hindu month, thus two Navamee days fall in every month. Navamee is considered as inauspicious day as per Hindu Astrology. New ventures, businesses, programs, functions or any other auspicious deeds are avoided during Navamee days. The major festivals celebrated on Navamee days are –

Chaitra Shukla Navamee - Shree Raam Navamee
Shraavan Shukla Navamee - Kajari Navamee (Kajalee Navamee)
Ashwin Shukla Navamee - Mahaanavamee -
Kaarttik Shukla Navamee - Akshaya Navamee or Kooshmaand Navamee or Aamalaa Navamee -
Maadhav Navamee -

Amaavasyaa
All Amaavasyaa falling on Shani Vaar (Saturday) - Shani Amaavas
All Amaavasyaa falling on Som Vaar (Monday) - Somvatee Amaavas

Poornimaa
There is only one Poornimaa every Lunar month, so 12 Poornimaa every year. Although every Poornimaa is holy still some Poornimaa are holier than others, such as :-

Vaishaakh Poornimaa
Aashaadh Poornimaa - Guru Poornimaa
Aashwin Poornimaa - Sharad Poornimaa
Kaarttik Poornimaa
Maagh Poornimaa
Phaalgun Poornimaa - Holee

Sankraanti Days
All Sankraanti Days are very important, holy and good for Poojaa, Daan etc

Vishuv Tithi
Vishuv Tithi are those on which Soorya (Sun) stays on Equator - April Sankraanti and September Sankraanti

Yugaadi Tithi
Yugaadi Tithi are those on which Yug (Sat, Tretaa, Dwaapar and Kali) have started. They are also special Tithi.