Board Thread:General Discussion/@comment-36328293-20181001122438/@comment-35148884-20181001192954

You can actually TT back to before the newest event started and the game will still give you passes for the laboratory. I normally start at January 1st and move forward from there. Heck, you can go back to before the game even existed if you like, I've revisited the 1980s (no better the second time around) ;)