I spent most of the day subtracting a bunch of numbers in order to generate a graph of a bunch of stars. (I had around 2000!) Luckily Leander wasn't too busy so I gave him 1000 of the numbers to subtract using Python, (I can't use Python on my borrowed laptop.)
I generated the graph and then just worked on my outline for the rest of the day. Around 4 Leander and I went to watch Matt's research presentation rehearsal. It was really cool.