DATE

Returns the sequential serial number that represents a particular date. If the cell format was General before the function was entered, the result is formatted as a date.
Syntax
DATE(year,month,day)
Year    The year argument can be one to four digits. Microsoft Excel interprets the year argument according to the date system you are using. By default, Excel for Windows uses the 1900 date system; Excel for the Macintosh uses the 1904 date system.

For the 1900 date system

·         If year is between 0 (zero) and 1899 (inclusive), Excel adds that value to 1900 to calculate the year. For example, DATE(108,1,2) returns January 2, 2008 (1900+108).

·         If year is between 1900 and 9999 (inclusive), Excel uses that value as the year. For example, DATE(2008,1,2) returns January 2, 2008.

·         If year is less than 0 or is 10000 or greater, Excel returns the #NUM! error value.

For the 1904 date system

·         If year is between 4 and 1899 (inclusive), Excel adds that value to 1900 to calculate the year. For example, DATE(108,1,2) returns January 2, 2008 (1900+108).

·         If year is between 1904 and 9999 (inclusive), Excel uses that value as the year. For example, DATE(2008,1,2) returns January 2, 2008.

·         If year is less than 4 or is 10000 or greater or if year is between 1900 and 1903 (inclusive), Excel returns the #NUM! error value.

Month    is a number representing the month of the year. If month is greater than 12, month adds that number of months to the first month in the year specified. For example, DATE(2008,14,2) returns the serial number representing February 2, 2009.
Day    is a number representing the day of the month. If day is greater than the number of days in the month specified, day adds that number of days to the first day in the month. For example, DATE(2008,1,35) returns the serial number representing February 4, 2008.

MIN

Returns the smallest number in a set of values.
Syntax
MIN(number1,number2,...)
Number1, number2, ...    are 1 to 30 numbers for which you want to find the minimum value.
Remarks

• You can specify arguments that are numbers, empty cells, logical values, or text representations of numbers. Arguments that are error values or text that cannot be translated into numbers cause errors.
• If an argument is an array or reference, only numbers in that array or reference are used. Empty cells, logical values, or text in the array or reference are ignored. If logical values and text should not be ignored, use MINA instead.
• If the arguments contain no numbers, MIN returns 0.

Example