sidereal

And Sideræl — pronounced “sigh-deer-ee-el” — is “a more elven” spelling of sidereal, “the true time of the universe, star time, deep space time, not our relative earth time,” she explained.

I mean, it still feels like fall, by the rhythm of the sidereal calendar I had imprinted in me by Sid and Marty Krofft.

Despite these shortcomings, Price identified a gear train—a set of linked gears—that calculated the average position of the moon on any specific date by using its period relation of 254 sidereal rotations in 19 years.

Livio structures his account partly around specific works, including Galileo’s 1610 The Sidereal Messenger, which described his major astronomical observations.

That’s where Mercer’s triumph manifests itself, there at the end of the great sidereal cycle.