Rikta Tithi, Ashtami Tithi both are inauspicious Muhurat, along with some other Tithi: Chaturthi, Navami, Chaturdashi, Saptami, Bhadra, Purnima, Amavasya, and Pratipada Tithi. These should not be selected for starting an auspicious event or work.
Meaning of Rikta Tithi
This Tithi is a symbol of solitude, peace, and sacrifice. The natives born in this Tithi, generally have a sense of affection and dedication to others. They spend most of their time in helping and social service.
People want to know when will be Ashtami Tithi and Rikta tithi yoga while considering any Muhurat for an event or important work because this is an inauspicious Tithi.
Rikta Tithi, Ashtami Tithi both are Inauspicious Muhurat
Rikta Tithi
These three Tithi Chaturthi, Navami, and Chaturdashi are known as Rikta Tithi and are inauspicious. Meaning of Rikta is empty, and the work done during this Tithi does not finish in time.
One should worship and take precautions during these Tithi to avoid obstacles or delays in their work.
Besides both these Tithi, there are some other inauspicious Tithi we find in Panchanga, which we should avoid for important auspicious ceremonies or events.
Purnima (full Moon day), Amavasya (New Moon day), and Pratipada or Padwa tithi (new moon day) are inauspicious.
One should perform Snan-Daan, take a sacred bath and do charity to the needy persons on these Snan-Daan Tithi.
Ashtami Tithi
Most of the Tithi create Yoga when joining some specific var(days) like Jaya Tithi which is forming due to the combination of Ashtami and Tuesday.
Ashtami is a Tithi, we observe Vrat, and perform Puja and Havan or Homa on this sacred Tithi, every month.
Generally, people should avoid Ashtami Tithi, which is also an inauspicious Tithi for performing auspicious events.
Ashtami Tithi changes into Jaya Tithi
But if Ashtami falls on a Tuesday, it changes into auspicious Jaya Tithi, the meaning of which is Tithi is good for victory. This is an exception to the general rule.