# get_day_from_timestamp()

Returns the day value of a given timestamp.

## Synopsis

get_day_from_timestamp(timestamp)


## Description

This function extracts and returns the day defined by a given timestamp. The timestamp must be formatted as either YYYYMMDDHH or YYYYMMDD, where YYYY is a four-digit year, MM is a two-digit month, DD is a two-digit day, and HH is a two-digit hour.

## Parameters

<timestamp>

An expression representing a timestamp, formatted as either YYYYMMDDHH or YYYYMMDD.

## Returns

The day value (an integer) of the given timestamp.

## Examples

The following returns $$2$$ since this timestamp represents January 2, 2021 at 12 noon.

get_day_from_timestamp(2021010212)


## Errors

A timestamp that exceeds the 10-character format will return the first two of the last four digits. That is, get_day_from_timestamp(20205060787654321) returns $$43$$.

A malformed timestamp that does not represent an actual date will not raise an error.