what is the most interesting day you’ve had in your whilst working as a scientist?

Question: what is the most interesting day you've had in your whilst working as a scientist?
- Keywords:
  day,
  interesting,
  working
Asked by oliver nye thescienceguy to Aileen on 7 Mar 2018.
- Aileen Baird answered on 7 Mar 2018:
  
  This is a great question. I think my most interesting day so far has been when I first visited the field site that I am currently working at. I work at Birmingham Institute of Forest Research and they have a big research forest with a real cool experiment where extra carbon dioxide (a greenhouse gas) is pumped into the air to mimic what the air will be like in 50 years time. Seeing this site for the first time and learning properly about how it works was so cool!
  
  I hope that the next “most interesting” day will be when I get some results from the work I have been doing in this forest.

Question: what is the most interesting day you've had in your whilst working as a scientist?