DATE : Returns the serial number of a particular date
DATEVALUE : Converts a date in the form of text to a serial number
DAY : Converts a serial number to a day of the month
DAYS360 : Calculates the number of days between two dates based on a 360-day year
EDATE : Returns the serial number of the date that is the indicated number of months before or after the start date
EOMONTH : Returns the serial number of the last day of the month before or after a specified number of months
HOUR : Converts a serial number to an hour
MINUTE : Converts a serial number to a minute
MONTH : Converts a serial number to a month
NETWORKDAYS : Returns the number of whole workdays between two dates
NOW : Returns the serial number of the current date and time
SECOND : Converts a serial number to a second
TIME : Returns the serial number of a particular time
TIMEVALUE : Converts a time in the form of text to a serial number
TODAY : Returns the serial number of today's date
WEEKDAY : Converts a serial number to a day of the week
WEEKNUM : Converts a serial number to a number representing where the week falls numerically with a year
WORKDAY : Returns the serial number of the date before or after a specified number of workdays
YEAR : Converts a serial number to a year
YEARFRAC : Returns the year fraction representing the number of whole days between start_date and end_date