Talk:Z1/@comment-26332239-20150702010823/@comment-26460664-20150926233157

Ja, 8 days to complete the quest. To get Z1, quest D5~D7 must first be done, by succesfully completing expedition 30(48hrs) four times.

After that, you still need to complete expedition 31(2hrs) to complete quest D8 in-order to get Z1. Therefore it takes 8 days & 2hrs.

Don't worry though, you still get 2 stukas in return.