Calendar[]
What are the exact values for local year and day length? I think it would be cool to invent the Venusian calendar and introduce "the Venusian Era". — Hellerick 
10:27, June 30, 2012 (UTC)
- I think so too. Thoughts, Nuke? :D
Imperium Guy 10:48, June 30, 2012 (UTC)
- I am still working on it. Please be patient. --NuclearVacuum (Talk) 15:57, June 30, 2012 (UTC)
Hellerick's proposals for Venusian calendar[]
Here I have three ideas. Probably it would be better to adopt all the three, with different colonies having different calendar systems. The more confusing the better :) — Hellerick 06:17, July 14, 2012 (UTC)
8-month calendar[]
According to the current dedcriptions of the venusian year (224.7 Earth days) and day (22 hours), one Venusian year consists of about 245 local days. I suggest to ignore the local lunar cycle just like it's done the Earth, and to introduce a year consisting of 8 month, each having about 30 or 31 days. Having 8 months instead of 12 months gives the idea of the Venusian years being shorter. The calendar is very similar to the one on the Earth, so the colonists should quickly get accustomed to it. Some month names should be introduced. — Hellerick 06:17, July 14, 2012 (UTC)
As for the calendar era, I think it would be better to synchronize it with the one we use, thus "Year 0" of the Common Era, should coinside with "Year 0" of the Venusian Era. It makes the calculations between the eras more simple: for a rough estimation all you have to do get the "Venusian year" is to multiply the "Earth year" by 1.625. Thus 2012 CE corresponds to about 3270 VE. — Hellerick 06:17, July 14, 2012 (UTC)
Keeping the Earth calendar[]
Since the axial tilt of the planet is very low (about 3°, while we have 23° on the Earth), the local season change should be hardly noticeable, so it probably would be better to ignore the local years altogether, and to keep on using the Earth years and months. Only the local days should be adopted, thus making about 398 days per year, and 33 days per month. — Hellerick 06:17, July 14, 2012 (UTC)
Month names and even lengths (converted into local days) should be the same as on the Eath. To covert an Earth date into a Venusian date all you have to do is to multiply the day number by 1.09 (=24/22). Thus, July 14, 2012 in the Earth calendar is about July 15, 2012 in the Venusian calendar. This makes the synchornization of the Terro-Venusian activities much easier. Plus, the colonsists won't complain "losing their birthdays" — all the Earth dates still are present in the Venusian calendar. :) — Hellerick 06:17, July 14, 2012 (UTC)
Shipping year[]
In the early stages of the colonization, when the planet heavily depends on shipping from the Earth, the most important cycle for the local economy is the synodic period, or the "shipping year" — the synchronization period between the orbits of the Earth and Venus. The "shipping windows" for cheapest interplanetary transportation are dependent on it. One shipping year for Venus consists of 583.92 Earth days or about 637 Venusian days. — Hellerick 06:17, July 14, 2012 (UTC)
The new year is supposed to be celebrated when the Earth and Venus have the closest distance between each other. This date reckoning system is rather "technish", so no months are supposed to be introduced. To avoid confusion between the Earth and Venusian days, the day on Venus is called "sol". The date consists of year number (counted from when the colony was established) and sol or day number (depending on whether this system is used on Venus, or by Venus-colonization agencies on the Earth). — Hellerick 06:17, July 14, 2012 (UTC)
What else has to be decided[]
- Time zones
- Date line
- Week days (when Jews are supposed to observe Sabbath?)
— Hellerick 06:17, July 14, 2012 (UTC)