Probably the day when I first put my programming skills to test. I brought the zx spectrum to work at MPSŠC, and coded some routine that would sort an array of name-score pairs by score. It was the enrollment day, and I had input all the candidates' names and scores, and on a certain keypress, it would scroll the list. I didn't do the whole school, only maybe the locksmiths, but it was a first. There was no printer, either, so the final results had to be copied from screen to paper by hand, and the TV I was using for a monitor was somewhere on top of a vitrine, level with your eyes if you stood, but then I didn't even have a proper desk, I used the low coffee table in the staff club.
That TV was surrounded by speakerboxes for the sound system (which I never heard turned on), and that being a CRT, the magnets from the left speaker were too close and bent the cathode ray, so the lower left quarter always pulled into purple. Every time I used it, I had to pull the speaker about 5cm away. The cleaning ladies would put it back the next morning. This happened about 20 times, but this was in the front building, next year. The furniture in the back building, where my oour was, was something else that I don't quite remember.