times?

just wondering how long it takes for a plant to completely develop, from germination to fully budded, ready to harvest.
and whats the shortest time to give it so it can go into the 12/12 cycle.
hope that makes sense, its my first grow :D
thanks a lot

5 days to germinate, 4-6 weeks to veg, between 6 - 12 weeks to flower, depending on strain.
The fastest strain I know is Top 44.