By Dasha
1)Child born is possible during Dasha of Lagnesh, 5th house lord, 7th house lord, Jupiter, any planet which is associated with 5th house.
2) Dasha of Depositor of Jupiter and 5th house lord in Rashi chart and Navansh chart may also able to give Child.
By Transit
1)When Jupiter transit trine(1,5,9) to Natal Sun.
2)Sun transit trine to Natal Jupiter (1,5,9).
3)When Jupiter transit to trine from 5th house lord (1,5,9 sign).
4)When Jupiter transit to trine from sign where Yamkantaka is placed in Natal chart.
5)When Jupiter transit over Natal Jupiter or sign where Jupiter placed in Navmasa Chart. ( Also consider trine from above)
6)When Jupiter transit(also from trine) over Navansh sign of 5th house lord from Jupiter.
7)When lagan lord and 5th house lord is associated in transit.
8)When 5th house lord is transit to own sign or Mooltrikona or Uccha sign.
9)When Lagan is transit over own sign, Mooltrikona or Uccha Rashi.
10)When lagnesh transit over 5th house.
11)5th house lord is transit over own self.
12)Add the planet degree of first Mahadasha lord and 5th Mahadasha lord. When Jupiter transit to trine(1,5,9) of sign which obtain after above process, may gives children.
By Astakvarga
1) Jupiter transit over sign which is getting maximum Astakvarga Rekha or more than 4 Rekha in above said condition of Jupiter transit.
2)Sun placed in sign where Jupiter bis getting maximum Astakvarga Rekha.