> People want to celebrate New Year at precisely the right time, they like to double check when the clocks have gone either forward or backward, and they want to ensure they start their two-minute silence at exactly 11am on Remembrance Day.
> Anecdotally, it is also rather popular just before five o'clock, when call-centre staff are desperate to avoid picking up a 20-minute call from an irate customer.
http://www.bbc.co.uk/news/magazine-14198506