Amazingly, I had just heard of an ISS downlink with Astronaut David Saint-Jacques replying to questions from a Portuguese school, later this evening.
Having heard that, I ran up to the park with my modest Baofeng radio and waited for the transmission to begin... I wasn't expecting to hear much, but then suddenly, I heard a very clear voice. "Oh no! wrong frequency!" I thought to myself, I then checked the screen indicating 145.800 MHz... Hold on,... Did he just mention dark matter...? Experiments...? Orbit...? Guess it's the ISS then!
Downlink Frequency: 145.800 MHz
Time: 1632 hrs