Throughout the guide you will see (and have been seeing) congruence symbols, ≡, rather than equals signs, =, because 71 does NOT equal 8, but they are equivalent for the purpose of determining the day of the week.
Therefore, in applying the algorithm, the day of FSH peak in urine was used to determine the days for which the FSH slope would be calculated, i.e., days 9-14 post-FSH peak in urine.
Prior to the start of each semester, the History Department will work with faculty members and teaching assistants to determine the days and times for discussion sections.
On top of that, a woman has to have a fairly regular cycle to determine the days of peak fertility in her cycle.
We determined the days until the start of the next menses that corresponded to the date of blood collection from menstrual calendars completed by postmenarcheal participants for 6 weeks after their blood collections.
We had already determined, the day before, the reason for the amazingly low mileage on the odometer: broken odometer.
Apologetically, he explained that the order of the two dance sections had been determined the day before, so that the dancers could rehearse properly.
Mr. Silver's critique of the keys system is akin to critiquing a pregnancy test, not for its failure to detect pregnancies, but for its failure to determine the day of conception.
