How to use Power BI DAX Date Functions with examples?. Microsoft Power BI DAX provides various Date Functions such as Year, Month, Day, Calendar, date, time, datediff, now, today, utcnow, utctoday, datevalue, timevalue, etc.
To demonstrate these Power BI DAX Date functions, we use the below-shown data. As you can see, there are 15 records in this table.
Power BI DAX Date Functions
The following series of examples shows the list of DAX Date Functions in Power BI
Power BI DAX NOW Function
The Power BI DAX Now function is one of the Power BI date function, used to return the current date and time. The syntax of this Power BI DAX NOW is
NOW()
To demonstrate the Power BI DAX NOW functions, we have to use the Calculated column. In order to create a column, please click on the New Column option under the Home tab, or Modeling tab.
We renamed the default column name as Today. As you can see from the screenshot below, while I was typing, Power BI is showing the suggestions.
By clicking the enter or any key, a new column created.
Let me add this column to the table that we created earlier. Please refer to Create Table Report article to understand the steps involved in creating a table
As you can see from the above screenshot, it displays today’s date and time.
Power BI DAX DAY Function
The Power BI DAX DAY function extract or return Day number from the given date. The Power BI DAX DAY Function syntax is
DAY(Date)
Let me create a column to return Day number from the Hire date column
DayinDate = DAY(EmployeeSales[HireDate])
Power BI DAX MONTH Function
The Power BI DAX Month function returns Month number from a given date. The Power BI DAX MONTH Function syntax is
MONTH(Date)
Let me create a column to return Month number from Hire date column
MonthinDate = MONTH(EmployeeSales[HireDate])
Here, we added the result of a previous function (day Function) to the Table.
Power BI DAX YEAR Function
The Power BI DAX YEAR function extract or return year number from the given date. The syntax of this Power BI DAX YEAR:
YEAR(Date)
Let me create a column to return Year from Hire date column
YearInDt = YEAR(EmployeeSales[HireDate])
Power BI DAX HOUR Function
The Power BI DAX HOUR function returns Hours (in 24 hours format) from a given date. The Power BI DAX HOUR Function syntax is:
HOUR(DateTime)
Let me create a column to return Hours from Hire date column
Hour = HOUR(EmployeeSales[HireDate])
Power BI DAX MINUTE Function
The Power BI DAX MINUTE function returns the number of minutes. The syntax of this Power BI DAX MINUTE is:
MINUTE(DateTime)
Let me create a column to return the number of minutes from the Hire date column
Min = MINUTE(EmployeeSales[HireDate])
Power BI DAX SECOND Function
The Power BI DAX SECOND function returns the number of seconds. The syntax of this Power BI DAX SECOND is:
SECOND(DateTime)
Let me create a column to return the number of seconds from the Hire date column
Sec = SECOND(EmployeeSales[HireDate])
Let me add the results of Year, Month, Day, Hour, Minute, and Second function results to the table.
Power BI DAX TODAY Function
The Power BI DAX Today function returns today’s date with default system time. The syntax of this Power BI DAX Today is:
TODAY()
Let me create a column to display today’s date
Today 2 = TODAY()
Let me compare both NOW() and TODAY().
From the screenshot below, you can see there is a time difference between the two of them.
Power BI DAX DATE Function
The Power BI DAX Date function is useful to return date from the year, month, and day. The Power BI DAX Date function syntax is:
DATE(year, month, day)
Let me create a single column to create a date from the year, month and day
Date = DATE(YEAR(EmployeeSales[HireDate]), MONTH(EmployeeSales[HireDate]),
DAY(EmployeeSales[HireDate]))
Power BI DAX TIME Function
The Power BI DAX Time function returns time from specified hour, minute, and seconds. The syntax of this Power BI DAX Time function is:
TIME(hour, minute, second)
Let me create one column to create time from hour, minute, and seconds
Time = TIME(HOUR(EmployeeSales[HireDate]), MINUTE(EmployeeSales[HireDate]),
SECOND(EmployeeSales[HireDate]))
Let me add Power BI DAX Time function result to the table report. If you find the output as the default date with the time, then change the data type from date/Time to Time.
Power BI DAX Weekday Function
The Power BI DAX Weekday function returns numbers from 1 to 7, where 1 as of Sunday, and 7 as of Monday. The Power BI DAX Weekday function syntax is:
WEEKDAY(Date, Number)
- If Number = 1 then 1 as of Sunday
- If Number = 2 then 1 as of Monday
- and Number = 3 then 0 as of Monday
Let me create a column to find the weekday number
WeekDay = WEEKDAY(EmployeeSales[HireDate], 1)
You can see the Week numbers
Power BI DAX WeekNum Function
The Power BI DAX WeekNum function returns the week number ( 1 as January first week). The syntax of this Power BI DAX Weeknum function is:
WEEKNUM(Date, Number)
If Number = 1 Week begins on Sunday, and If Number = 2, then Week begins on Monday. Let me create a column to find the week number
WeekNum = WEEKNUM(EmployeeSales[HireDate], 1)
Power BI DAX UTCNOW Function
The DAX UTCNOW function is the same as the Power BI DAX NOW function. However, it returns date and time along with UTC. The syntax of this Power BI DAX UTCNOW function is:
UTCNOW()
Let me create one column to find the date and time along with UTC
UTCNow = UTCNOW()
Power BI DAX UTCTODAY Function
The Power BI DAX UTCTODAY function is the same as the ODAY function. However, it returns date with default time along with UTC. The syntax of this Power BI DAX UTCTODAY is:
UTCTODAY()
Let me create a column to find the date with UTC
UTCToday = UTCTODAY()
Power BI DAX YEARFRAC Function
The Power BI DAX YEARFRAC function returns the fractional difference between the start date and end date. The syntax of the Power BI DAX YEARFRAC is:
YEARFRAC(Start_Date, End_Date)
Let me find the exact number of years difference in-between Hire Date and Today
YearFrac = YEARFRAC(EmployeeSales[HireDate], NOW())
Power BI DAX EDATE Function
The Power BI DAX EDATE function returns previous dates or future dates. For example, policy mature date by adding 24 as the second argument, etc. The syntax of this Power BI DAX EDATE function is:
EDATE(Start_Date, Months)
Let me add 2 months to Hire Date
Edate = EDATE(EmployeeSales[HireDate], 2)
Power BI DAX EOMONTH Function
The Power BI DAX EOMONTH function (EOMONTH means the end of the month) display the last day in a month. You can use the second argument to return previous dates or future dates. The syntax of this Power BI DAX EDATE is:
EOMONTH(Start_Date, Months)
Let me add 3 months to Hire Date. The below statement first adds three months to Hire date and then returns the last day of that month.
Eomonth = EOMONTH(EmployeeSales[HireDate], 3)
Power BI DAX DATEDIFF Function
The Power BI DAX DATEDIFF function returns the date difference between the start date and end date. You can use the Power BI DAX DATEDIFF function third argument to select the difference value.
Power BI DAX DATEDIFF function accepts YEAR, MONTH, DAY, SECOND, MINUTE, HOUR, QUARTER, WEEK. For example, if you select the MONTH, then the DateDiff function returns the number of month difference between a start date and end date.
The syntax of this Power BI DAX DATEDIFF function is:
DATEDIFF(Start_Date, End_Date, Difference_Value)
Let me check the difference between Hire date and Today in years.
DateDiff = DATEDIFF(EmployeeSales[HireDate], NOW(), YEAR)
Power BI DAX DATEVALUE Function
The DAX DATEVALUE function returns the date with system time. The syntax of this Power BI DAX DATEVALUE is:
DATEVALUE(Date)
Let me return the Date from Hire date.
DtValue = DATEVALUE(EmployeeSales[HireDate])
Power BI DAX TIMEVALUE Function
The Power BI DAX TIMEVALUE function returns the time with the system default date. The Power BI DAX TIMEVALUE function syntax is:
TIMEVALUE(Date)
Let me return the Time value from the Hire date. Remember, 12/30/1899 is the default Power BI generated to date.
TimeVal = TIMEVALUE(EmployeeSales[HireDate])
Power BI DAX CALENDAR Function
The Power BI DAX CALENDAR function returns a table of dates from the start date to the end date. The syntax of a Power BI DAX CALENDAR function is:
CALENDAR(Start_Date, End_Date)
The below Power BI DAX CALENDAR function returns dates from Jan 1, 2018, to January 15, 2018. I suggest you refer to Create a calculated table article to understand the process of creating a new table.
Calender = CALENDAR(DATE(2018,1, 1), DATE(2018, 1, 15))
Let me create a table using this output
Power BI DAX CALENDARAUTO Function
The DAX CALENDARAUTO function, which returns continues dates using the data model date. The syntax of a Power BI DAX CALENDARAUTO is:
CALENDARAUTO(year_end_month)
The argument value is an option for this Power BI DAX CALENDARAUTO function. It accepts numbers from 1 to 12 months, and if you omit, it treats the value as 12 (default)
CalenderAutotable = CALENDARAUTO()
You can see the output of this Power BI date function
