In dialect Hindi, the word 'chhath'
denotes the number 6 in Hindi and the festival begins on the sixth day of the
Hindu lunar month of Kartik, which corresponds to months of October-November
in the Gregorian calendar.
The festival of Chhath begins a week
after Diwali. Chhath is the holiest Hindu festival of bihar and extends to four
days. This festival has particular significance in Bihar, but it is also celebrated
in Uttar Pradesh and nearby areas.
Even in Tamilnadu, the migrants from
the north celebrate Chhath beside the sea beach.