Ashta Prahar in Indian Classical Music (Times of days) and Ragas for them
Ashta Prahar:

Ashta means Eight and Prahar means a period of 3 hours. As the day is divided in 24 hours it so do the prahar of each 3 hours and hence there are 8 prahars. And the duration from morning 6pm to the next day morning 6am is called Ashta prahar.

Praharas by time and ragas for each of them:
Prahar 1 - 6am to 9am:

Vairav, Bengal Vairav, Ramkali, Bibhas, Jogai, Tori, Jaidev, Morning Keertan, Prabhat Bhairav, Gunkali and Kalingara,

Prahar 2 - 9am to 12pm:

Deva Gandhar, Bhairavi, Mishra Bhairavi, Asavari, JonPuri, Durga, Gandhari, Misra Bilawal, Bilawal, Brindawani Sarang, Samant Sarang, Kurubh, Devanagiri

Prahar 3 - 12pm to 3pm:

Gor Sarang, Bhimpalasi, Piloo, Multani, Dhani, Triveni, Palasi, Hansknkini

Prahar 4 - 3pm to 6pm:

Traditional Keertan of Bengal, Dhanasari, Manohar, Ragasri, Puravi, Malsri, Malvi, Sritank and Hans Narayani

Prahar 5 - 6pm to 9pm:

Yaman, Yaman Kalyan, Hem Kalyan, Purvi Kalyan, Bhupali, Puria, Kedar, Jaldhar Kedar, Marwa, Chhaya, Khamaj, Narayani, Durga, Tilak Kamod, Hindol, Misra Khamaj Nata, Hamir

Prahar 6 - 9pm to 12am:

Deshkar (Night), Desh, Desh Misra, Sorat, Bihag, Darsh, Champak, Misra Gara, Tilang, Jai Jawanti, Bahar, Kafi, Arana, Megah, Bagishari, Rageshwari, Malhal, Miya, Malhar

Prahar 7 - 12am to 3am:

Malgunji, Darbari Kanra, Basant Bahar, Deepak, Basant, Gauri, Chitara Gauri, Shivaranjini, Jaitsri, Dhawalsri, Paraj, Mali Gaura, Maad, Sohani, Hans Rath, Hans Dhwani

Prahar 8 - 3am to 6am:

Chandrakos, Malkos, Gopika Basant, Pancham, Megh Ranjini, Bhankar, Lalita Gauri, Lalita, Khat, Gurjari Tori, Barati Tori, Bhaopal Tori, Prabhati Kirtan

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