#and light is sinister because it comes from space and is probably sent by Unicron

[honestlyvan]

@bitegore asked: 15 and 17 for reconstruction/post-war Cybertron?

17. Day and night

Cybertronians don’t really have circadian rhythms the way we think about them -- their roomba hindbrains developed before Cybertron had settled into orbit around a star, and even then Cybertron’s rotational periods are not constant -- and traditionally more stuff got done during the dark period of the rotation becuse that is, just... more familiar to them developmentally. Fortunately, post-war so many Cybertronians were used to a yay-30 hour working cycle after being on the 24-hour Earth for so long that the yay-60 hour Cybertronian day cycle could easily be split into daylight and night time, and then have those two halves be basically an entire days worth of stuff and activity before resetting.

The funny thing is that it stuck well enough that the largely uneven rotational period of Cybertron eventually stabilised into actually being 70-and-change hours long. Before that, since mecha were active around the clock and work shifts mattered more than the length of the day, Cybertron’s rotational period would vary by about 10 hours every quarter of a year.