To detect ovulation through ovulation test paper, you can do the test at 10:00 pm. This is because ovulation testing through ovulation test paper is an indirect response to ovulation by detecting changes in luteinizing hormone in the body. Therefore, when conducting ovulation testing, it is generally necessary to conduct continuous testing. After entering the ovulation period, the beginning can be detected at intervals of 12 hours, and later can be detected at intervals of six hours, so as to ensure the accuracy of the test, and effectively avoid the situation of missing ovulation. Because the luteinizing hormone in the body will not change in the morning or at night, so there is no strict requirement on time, as long as you can test at intervals, you will generally be able to detect ovulation. So at ten o’clock in the evening, you can carry out the test of ovulation.