Duration of labour

Time of normal labour -

In primigravidae :  12 - 14 hours

In multigravidae :   6 - 8 hours

Duration of stages (labour has 3 stages) -

1st stage -  Average duration 12 hours in primigravidae &
                                              6 hours in multigravidae.

2nd stage - Average duration 2 hours in primigravidae &
                                             30 min in multigravidae.

3rd stage -  Average duration 15 min in both primigravidae and multigravidae.

For more about stages of labour go to following page -
http://pregnancyandlabour.blogspot.in/2014/01/stages-of-labour.html