DAY

Returns the day of the month of a given date.

Sample usage

DAY(Date)

Syntax

  1. Returns the day from a Date or Date & Time value.

    Day( date_expression )

  2. Returns the day from a compatibility mode Date value.

    DAY( X [, format_string ])

Parameters

  • date_expression - a Date or Date & Time field or expression.
  • X - a field or expression that evaluates to Text, Number, or compatibility mode Date.
  • format_string - format for X. Optional if X is correctly configured as a semantic date field.

Format strings for compatibility mode dates

Supported date functions accept the following input formats if X is a Text field or expression, or compatibility mode Date:

  • Any valid strptime format is accepted.
  • 'BASIC': %Y/%m/%d-%H:%M:%S
  • 'DEFAULT_DASH': %Y-%m-%d [%H:%M:%S]
  • 'DEFAULT_SLASH': %Y/%m/%d [%H:%M:%S]
  • 'DEFAULT_DECIMAL': %Y%m%d [%H:%M:%S]
  • 'RFC_1123': for example, Sat, 24 May 2008 20:09:47 GMT
  • 'RFC_3339': for example, 2008-05-24T20:09:47Z
  • 'DECIMAL_DATE': same as 'DEFAULT_DECIMAL'

Supported time functions accept the following input format if X is a Number field or expression:

  • 'SECONDS': seconds since Epoch
  • 'MILLIS': milliseconds since Epoch
  • 'MICROS': microseconds since Epoch
  • 'NANOS': nanoseconds since Epoch
  • 'JULIAN_DATE': days since Epoch

Examples

Example formula Input Output
DAY(Date) Jan 1, 2019 1
DAY(Date as Text, 'BASIC') 2019/01/01-09:40:45 1
DAY(Date as Number, 'SECONDS') 1561784874 29
DAY(Date as lots of Numbers, 'MILLIS') 1562004058620 1

Notes

This function works with both compatibility mode dates and upgraded Date and Date & Time data types.