Any malefic planet such as Mars, Saturn Rahu or Ketu, Sun or afflicted Moon, if present in the 7th house or is expecting, can cause late marriage. If Saturn and Moon are in any possible combination, the marriage might be delayed.
Also in astrology, Saturn is known to bring delay and slowness to related matters. So, its presence or association with the seventh house may become one of the major reasons for the delay in marriage.
Mostly delaying factors are career-oriented efforts, higher qualifications, family responsibilities to be fulfilled before being married, highly choosy, in search of a better partner, etc. Apart from the seventh house, some planets play a very significant role in delaying marriage.
Also Check: Marriage Astrologer In Bhubaneswar