Njattuvelas /njattuvela calendar
Njattuvela refers to position of the sun in relation to zodiac signs. There are 27 Njattuvelas every year, each with a duration of thirteen-and-a-half days.
The thiruvathira njattevela favours farming since there is steady rain at that period of the year.
The solar transit of Alpha Orionis (Thiruvathira Njattuvela ) starts on June 22, . gives equal amont of rain and sun.
The njattuvela from june 21 to july 5 which consists of 13 a half days its estimated that there will be 101 rains and 101 periods of sunshine
a njattuela calendar has been released by the trissur jilla panchayath