Timing of marriage

When jupiter transits, your 2nd house from uppapada lagna, then marriage will be more stable. Eg. if you uppapada house is virgo, then marry while jupiter transits over Libra or aspects Libra from either aries/gemini/aquarius

https://vijayalur.wordpress.com/2013/12/21/simple-and-easy-way-to-decipher-d-9-navamsha-chart/

1st u need to check if its early or moderate or late marriage using the above mentioned link

Timing of Marriage

• Navamsha Lagna Lord in Kendra – early marriage
• Navamsha Lagna Lord in Trikona –slight delay but will get married in time.
• Navamsha Lagna Lord in Dusthana, spoilt by malefics like Saturn, Mars, Sun, Rahu and Ketu – Marriage beyond 30 years.
• Navamsha Lagna Lord is extremely spoilt – Denial of marriage.
• Navamsha Lagna Lord in 7th House, 7th Lord in 12th House – marriage in 23rd or 26th years of age.
• 8th House of Rashi chart is 7th House of Navamsha, Venus in Navamsha Lagna, marriage in 25th or 33rd years of age.

For particular timing, check if u r running thru dasa or antar dasa of 7th lord or planters in 7 or plantes aspected by /conjunct 7th lord/planets in 7H

Or check if Jupiter is transiting over 7th or 2nd house

1 more method exists using KP which i will update later