Difference between 24:00 and 00:00?

Question

What is the difference between 24:00 clock and 00:00 clock. IMO 24:00 clock is the day before and 00:00 clock is the beginning of the new day. But I\'m not really convinced

Answer 1

Just try it yourself (which you should have done with your question so the relation to PHP becomes more clear):

echo '00:00 - ', date('r', strtotime('00:00')), 
   "\n24:00 - ", date('r', strtotime('24:00'));

Gives the following output (Demo):

00:00 - Thu, 25 Oct 2012 00:00:00 +0000
24:00 - Fri, 26 Oct 2012 00:00:00 +0000

Next thing you could have done (and @Baba pointed to it already) is to just check some resources first like (as a very first step) Wikipedia.