Successful sexual intercourse is essential if you want to get pregnant. During sexual intercourse, sperm and eggs meet in the female's reproductive tract, and then combine to form a fertilized egg, which is eventually implanted in the uterus to prepare for the birth of a new life.

To answer this question, we need to understand when sperm and egg meet within the reproductive tract. Generally speaking, during a woman's menstrual cycle, eggs will be present in the ovaries, waiting for one day to be fertilized. On the 14th day of the menstrual cycle, the number of eggs in the ovaries will reach a peak and then begin to decrease. On day 16, the egg will begin to mature and await the arrival of sperm.

Evening sexual intercourse refers to sexual intercourse between 7 pm and 10 pm. During this time frame, the number of eggs in a woman’s reproductive tract will be greatest. Therefore, having sex at night is one way to increase your chances of conception.

However, not all nighttime intercourse will lead to pregnancy. This depends on a variety of factors, including the woman's menstrual cycle, sperm count and activity, and the man's reproductive ability, among others.