I think there is a bug in CLOCK with time sync on BBC. I use the actual version 1.11.7.
I tried it a few days before at 31 January and got 01 February as decode result. Next day, I decode it again and it was correct. At this point I thought I did something wrong the day before.
Today I got "14" as day, when I decode the signal. I tried it serveral times in USB and LSB. Always with the same wrong result for the day.
Is it a bug or did I something wrong or send they really wrong data?