o7 Commanders,
As we've now got to wait a whole day for U12, I've added a small requested feature to OD Massacre mission Stacker so you can still get an update today, even if it is not the one you wanted or even needed 😛
I've simply added a column to the bounty feed which shows the time from the previous kill to the current one.
Sorry, I can't bring you U12, hope you find this helpful though.
o7
Source: https://www.reddit.com/r/EliteDangerous/comments/v6qny0/od_massacre_mission_stacker_v17/