Map of Cybertron

[Paulbot]

That's a great question. My feeling is yes but I can't think of anything in particular that proves this. Given that no Transformers have been shown to be freaking out when it got dark on Earth I think they know of the concept of day and night. For most of the Marvel Comics Cybertron didn't orbit a star so they wouldn't have days and nights. Cybertron's often shown with a dark night sky which maybe could be explained by a similar atmosphere to Earth (?) except that humans are able to wonder around and breath normally on the planet.

[liegeprime]

They have nights and day in Cybertron, thats how they based their computation for their time measurements,1 solar cycle - 1 day, but since the planet is massive and in a degraded orbit , the days and nights are much longer, hence the translation to earth hours for their hours is much more - don't have my vol#8 of DW MTMTE for G1 TFs here but its in there for those who have the comics - time measurement and earth equivalents.

[STL]

They have nights and day in Cybertron, thats how they based their computation for their time measurements,1 solar cycle - 1 day, but since the planet is massive and in a degraded orbit , the days and nights are much longer, hence the translation to earth hours for their hours is much more - don't have my vol#8 of DW MTMTE for G1 TFs here but its in there for those who have the comics - time measurement and earth equivalents.

Hrm... are you sure? I've got my MTME #8 in front of me and I only find reference to

1 breem = 8.3 Earth minutes = 1000 Astroseconds
1 vorn = 83 Earth years

In War Within #1, the story begins with daylight as we look onto Iacon. In hte Dark Ages, there appears to be sunlight b/c the sky is heavily orange when Springer and co. engage the Ultracons. But never really do we have an explicit reference to day and night on Cybertron.