Time

I cannot explain to you just how slowly today is creeping by. It is rainy and gray and horrible outside and I am in the office wanting only to be home in bed and dreading the ride home on wet smelly buses and trains. It has been excrutiating watching the seconds of the day tick by (only 1500 or so more to go). But I just heard someone talking about booking a Christmas Party and was reminded that another year has almost flown by - seriously it is almost 2/3 over. Please explain to me how time can pass so painfully slowly and so painfully quickly at the same time?