Implantation typically occurs about 6 to 10 days after ovulation, with the most common timing being around 8 to 10 days after ovulation. However, it can happen as early as 6 days or as late as 12 days post-ovulation. This timing corresponds to when a fertilized egg (blastocyst) attaches to the uterine wall to begin pregnancy. The process of implantation itself takes several days as the blastocyst burrows into the uterine lining.