when you the transiting sun andmoon are inthe same angular position as in your natsal chart, you will ovulate.
in your natal chart the sun is infront of the moon by 68 degrees and 13 minutes,
this angular relationship will be on sept.29 2013 at @8:58am
(3:28UT) in mangalore. so sex at or before this time,up to 3 days before will ,result in your pregnancy if all other physical conditions are well.
the next ovulation date is oct.29,2013 at 4:30 am(22:45UT oct 28) at mangalore
the next date is nov 27 2013 10:36 pm (17:06UT) at mangalore.
good fortune
rahu