Turns out dinosaurs spent their days long before we did in much shorter fashion. According to Live Science, the day of the dinosaurs meant that the sun traveled around almost twice as fast as it does in today's time. This means that at the time dinosaurs existed -- the days were actually significantly shorter.
Fossils of rudist bivalves such as this one (Vaccinites) discovered in the United Arab Emirates' Al-Hajar Mountains, provide valuable insight into what life was like millions of years ago.(Image: © Wikipedia, Wilson44691 – Own work, Public Domain)
In fact --- ancient researchers now say that days were up to 30 minutes shorter and week's a whole week longer at the end of the year.