The day of ovulation and the day before ovulation are more likely to result in conception compared to the day after ovulation, but the exact time cannot be determined due to individual differences. After ovulation, the mature egg can survive in the body for 24 to 48 hours, and the strongest time for the egg to be fertilized is within 24 hours after ovulation; while the sperm can survive in the female reproductive system for 2 to 3 days, and has a relatively strong ability to be fertilized in less than 8 hours, so it’s easier to conceive on the day of ovulation and the day before ovulation. For women who need to prepare for pregnancy, if they are not sure of the specific date of ovulation, it is recommended that they can use ovulation test strips or go to the gynecology department of a regular hospital to monitor the growth and development of the follicles under the ultrasound, which will determine the time of ovulation and guide coitus to increase the chances of conception.