Ayurveda Clock

 Vata(Air):    6 to 10 AM and 6 to 10 PM

Pitta(Fire):    10 to 2 AM and 10 to 2 PM

Kapha(Water): 2 to 6 AM and 2 to 6 PM

 Vata(Air):  Fall & Early winter

Pitta(Fire):  Summer

Kapha(Water): Late winter and Spring

Vata(Air): Childhood & Youth 

Pitta(Fire):  Middle age

Kapha(Water): Old age