The copying process would have been repeated with each diurnal cycle.

Changes in the diurnal cycle allow different developmental stages of embryos to be available during normal working hours.

We have diurnal cycles, active and resting, just like humans, with approximately the same length.

We will contact you within a few of your diurnal cycles to discuss further diplomatic matters.

I'm sure you've been here long enough, this trip, to adapt to Earth's diurnal cycle.

Unlike many animals, it does not have a diurnal cycle, and is active both day and night.

Quasi-continuous measurements from the site show a small diurnal cycle.

During seasonal or longer period diurnal cycles water may have been present as thin films.

The limiting factor is the diurnal cycle of the sun, rising and setting.

Near the ground there is a very large diurnal cycle which decreases with altitude.