What is the difference between a day a month and a year?

number of seconds past in the timeframe A day is defined as 24 hours. A month lasts either 28 days(Febuary non-leap year), 29 days( Febuary leap year), 30 days, or 31 days. A year is 365 days made up of 12 months, or 366 days made of 12 moths in a leap year.