Thirty one....(nearly)

After work today I headed to a lecture at the London School of Economics. It was really interesting and I also caught up with an ex-colleague I haven't seen for a couple of years. I took a few photos at the LSE that I intended to blip. Then in the taxi on the way home I spotted this image. In the brief moment the taxi stopped I spotted a 3 and a 1. I was thinking I am very clever and this 3 and 1 could be 31st May. Trouble is, it is still the 30th! hmmm. Never mind. I still like the visual.