MAKE_DATE_TIME - Returns date based on given inputs in Informatica

MAKE_DATE_TIME function is used construct a date in informatica. Assume you have few information in date like Date, month, years and no time information. How to construct date with available information ? use MAKE_DATE_TIME.
Syntax
MAKE_DATE_TIME( year, month, day, hour, minute, second, nanosecond)

ArgumentRequired/OptionalDescription
yearRequiredNumeric datatype. Positive 4-digit integer. If you pass this function a 2-digit year, the Integration Service returns “00” as the first two digits of the year.
monthRequiredNumeric datatype. Positive integer between 1 and 12 (January=1 and December=12).
dayRequiredNumeric datatype. Positive integer between 1 and 31 (except for the months that have less than 31 days: February, April, June, September, and November).
hourOptionalNumeric datatype. Positive integer between 0 and 24 (where 0=12AM, 12=12PM, and 24 =12AM).
minuteOptionalNumeric datatype. Positive integer between 0 and 59.
secondOptionalNumeric datatype. Positive integer between 0 and 59.
nanosecondOptionalNumeric datatype. Positive integer between 0 and 999,999,999.

How to make date with only day, month and year.
MAKE_DATE_TIME(2010,10,28)

Return value 10/27/2010 00:00:00