Six seasons as per Indian system:
1.Shishir – Magh and Phalgun 2.Basant – Chaitra and Vaishakh
3.Grisham – Jyeshtha and Ashadh 4.Varsha – Shravan and Bhadrpad
5.Sharad – Ashwin and Kartik 6.Hemant – Margshirsh and Paush
Assimilation, Aggravation and Neutralization of various humors in the six seasons:
Dakshinayan and Uttrayan
Dakshinayan : Varsha, Sharad ad Hemant.
Uttarayan : Shishir, Basant and Greesham.
In the three seasons of Uttrayan Sun gets powerful while in the three seasons of Dakshinayan, moon attains power. In Uttrayan power of the jeevas get increased and so do Bitter, Astringent, Tart ras (रस) develops; while during dakshinaya Sour, Salty and Sweet ras (रस) get increased in the creation.
Humor Season of Aggravation
Vaayu Varsha, Hemant and Shishir.
Pitt Sharad and Greesham
Day-Night Divisions Humor Affect
1st Prahar of Day – (Basant) Kaph Aggravated and Pitt stabilized
2nd Prahar of Day - (Greesham) Vaat Assimilated
3rd Prahar of Day – (Pravrit) Vaayu aggravation and stabilized
4th Prahar of Day – (Varsha) Pitt Assimilation
5th Prahar of Day – (Sharad) Pitt aggravation and Vaat stabilized
6th Prahar of Day – (Hemant) Kaph Assimilated
VAAT PITT KAPH
Assimiltion Grisham Varsha Hemant
2nd Prahar of day 4th Prahar of day Previous night
Vaish. & Jyes. Bhdon & Kwar Paush & Magh
(Maesh & Vrish) (Singh * Kanya) (Dhanu & Makar)
Aggravation Pravat Sharad Basant
3rd Prahar of day Mid night 1st Prahar of day
Asha & Shravan Kartik & Aghan Phalgun & Chaitra
(Mithun & Kark) (Tula & Vrishchk) (Kumbh & Meen)
Balance Sharad Basant Pravrit
Mid Night 1st Prahar of Day 3rd Prahar of day
Kartik Aghan Phalgun & Chaitra Ashad & Shravan
(Tula & Vrishchk) (Kumbh & Meen) (Mithun & Kark)
Reference from Chikitsa Chandrodaya, Babu Haridas Vaidya, Publisher: Haridas & Co Pvt. Ltd.