Mathematical Madness

What happened on Thursday? What was so special about my blog that day? It received a mahoosive 4256 hits. This is more than twice as high as my previous record, and six times my average daily hits. I don't check every day - but being a maths geek I look sometimes, and this one has got me flummoxed. I didn't mention any popular phrase that might show up in search engines [like "Benedict Cumberbatch", "Game of Thrones" or "Doctor Who"]
Maybe there are people out there who are obsessive about the Forestry Commission or Julia Donaldson and have Google Alerts for them.

Can anyone explain the Dark Arts of the Internet to me? I really don't understand these things...