HOURReturns the hour component of a specific time, in numeric format.
time – The time from which to calculate the hour component. Must be a reference to a cell containing a date/time, a function returning a date/time type, or a number.
Ensure that the input to the function is either a reference to a cell containing a date/time, a function which returns a date/time object such as TIME, or a date serial number of the type returned by the N function. Google Sheets represents dates and times as numbers; while conversion is automatic when a human-readable date is entered into a cell, functions only accept literal dates in numeric format.
HOUR does not autoconvert number formats in the same way that Google Sheets does upon direct entry into cells. Therefore, HOUR(12:00:00) will return an error.
HOUR returns the intuitive understanding of hours, and is useful primarily in other calculations rather than to extract the hour component of a known time, as that value is easily known from a plain reading of the entire time.
Note that date objects that are created with the DATE function or by entry of a date without a time component will have a time of 0:00:00.
YEAR: Returns the year specified by a given date.
WEEKDAY: Returns a number representing the day of the week of the date provided.
TO_DATE: Converts a provided number to a date.
TIME: Converts an hour, minute, and second into a time.
SECOND: Returns the second component of a specific time, in numeric format.
N: Returns the argument provided as a number.
MONTH: Returns the month of the year a specific date falls in, in numeric format.
MINUTE: Returns the minute component of a specific time, in numeric format.
DAY: Returns the day of the month that a specific date falls on, in numeric format.
DATEVALUE: Converts a provided date string in a known format to a date value.
DATE: Converts a year, month, and day into a date.
Returns the hour as an integer for the given date value.