1Astronomers divide the nychthemeron into two equal periods: a solar day and a sidereal day.
2The medical team monitored the patient's vital signs over a nychthemeron to track any changes in her condition.
3The study examined the effects of sleep deprivation on cognitive function over a single nychthemeron.
4In some cultures, the nychthemeron is divided into three equal periods: morning, noon, and night.
5The concept of a nychthemeron is essential in understanding the Earth's rotation and its effects on our daily lives.