Time has not sped up. There are still 60 seconds in a minute. 60 minutes in an hour. 24 hours in a day and 28 to 31 days in a month. Time in itself is exactly the same. As you get older it does seem like time goes by quicker. I guess it depends on what is going on in your life too. If you are a kid in school and miserable then time will seem like it just drags by.