A good way to see if a year is a leap one is to divide it by 4. If the modulus is 0 then it is a leap year, hence 2000, 2004, 2008 are whereas 2001, 2002, 2003 etc. are not.
Donate to UBBDev today to help aid in Operational, Server and Script Maintenance, and Development costs.
Please also see our parent organization VNC Web Services if you're in the need of a new UBB.threads Install or Upgrade, Site/Server Migrations, or Security and Coding Services.