Atmospheric ConVersion Facilities

[chewy027]

the description says 2 years so maybe your right.

[takacs_steve]

and now it'll get even more confusing since I upgraded a II level (2.5 year) plant to a III level (2.0 year) plant...hope I'm still in the game in ~20 turns.

space may have been better used for research facilities...

[Suicide Junkie]

Given the fact that it can be 2.5 years, plus I do recall having Atmosphere conVersions complete on consecutive turns, I believe that it takes exactly 20-30 turns after you finish construction.