In case you didn’t hear, didn’t know, or just didn’t care, one second was added to yesterday. As for why it’s needed, see this FAQ on “leaps” from NIST (the National Institute of Standards and Technology).
So what did you do with the extra second? I remembered about it around half an hour before it was added, then totally forgot. If I had to guess, I was holding Caroline. Can’t do much with a second, can you? Unless you’re Usain Bolt.