Why does the DATE() function return the next date after 6:00 PM?

ST_Superman
ST_Superman Domo Employee
in Magic ETL

I have a dataset with a Date and Time stamp field.  When I convert it to a date field using DATE(`date_field`) I am finding some unexpected results.

1.png

 

 

The only way that I was able to get the intended results was to subtract 6 hours from the timestamp first:

Is this an intended function of the DATE() function, or am I doing something wrong?

Best Answers

  • Godiepi
    Godiepi Coach
    Answer ✓

    Have you tried using the Convert_TZ() fundtion  as a second argument ?

    here it is an simple example of how to use it

     

    DATEDIFF(Date(CONVERT_TZ(now(),'UTC','EST')),`TransactionDate`)

    this give us the number of days from current date/time

    Domo Arigato!

    **Say 'Thanks' by clicking the thumbs up in the post that helped you.
    **Please mark the post that solves your problem as 'Accepted Solution'
  • Godiepi
    Godiepi Coach
    Answer ✓

    The CONVERT_TZ function automatically accounts for daylight savings when using long time zone names

     

    for example:

    CONVERT_TZ(`Date`, '+00:00', '+10:00')

    CONVERT_TZ(`Date`,'UTC','American/Chicago')
    Domo Arigato!

    **Say 'Thanks' by clicking the thumbs up in the post that helped you.
    **Please mark the post that solves your problem as 'Accepted Solution'
  • cwolman
    cwolman Contributor
    Answer ✓

    Try this one out.

    convert_tz(`Date and time of Last Change`,'utc','us/central')


    -----------------
    Chris

Answers

  • Godiepi
    Godiepi Coach

    It does the same thing on my flows so we have to adjust for UTC time since we are in EST time,  always substracting 4 or 5 hours depending of daily savings time to prevent that issue

    Domo Arigato!

    **Say 'Thanks' by clicking the thumbs up in the post that helped you.
    **Please mark the post that solves your problem as 'Accepted Solution'
  • ST_Superman
    ST_Superman Domo Employee

    How do you determine the number of hours to subtract though?  I would like to prevent the need to change my dataflow every 6 months or so

  • Godiepi
    Godiepi Coach
    Answer ✓

    Have you tried using the Convert_TZ() fundtion  as a second argument ?

    here it is an simple example of how to use it

     

    DATEDIFF(Date(CONVERT_TZ(now(),'UTC','EST')),`TransactionDate`)

    this give us the number of days from current date/time

    Domo Arigato!

    **Say 'Thanks' by clicking the thumbs up in the post that helped you.
    **Please mark the post that solves your problem as 'Accepted Solution'
  • ST_Superman
    ST_Superman Domo Employee

    I feel like this runs into the same issues.  At some point you would need to change from 

    CONVERT_TZ(now(),'UTC','EST')

    to

    CONVERT_TZ(now(),'UTC','EDT')

    I can't find a way to automate the switch, given that the actual date changes each year

  • Godiepi
    Godiepi Coach
    Answer ✓

    The CONVERT_TZ function automatically accounts for daylight savings when using long time zone names

     

    for example:

    CONVERT_TZ(`Date`, '+00:00', '+10:00')

    CONVERT_TZ(`Date`,'UTC','American/Chicago')
    Domo Arigato!

    **Say 'Thanks' by clicking the thumbs up in the post that helped you.
    **Please mark the post that solves your problem as 'Accepted Solution'
  • ST_Superman
    ST_Superman Domo Employee

    I thought we had a solution here, but I'm not able to get the long timezone name to work:tz.png

     

  • cwolman
    cwolman Contributor
    Answer ✓

    Try this one out.

    convert_tz(`Date and time of Last Change`,'utc','us/central')


    -----------------
    Chris
  • ST_Superman
    ST_Superman Domo Employee

    Thank you @cwolman  and @Godiepi 

     

    I'm not sure how many answers I can accept as a solution, but I've got this conversion working now.  

    ty sman.png

     

  • Godiepi
    Godiepi Coach

    @ST_-Superman-_  its got to take more than one to be able to help the man of steel ?  (Superman theme song playing in the backgorund)

     

    @DaniBoy  should take @cwolman  and me up a Belt in the Dojo for doing this LOL !

     

    Have a good day guys

    Domo Arigato!

    **Say 'Thanks' by clicking the thumbs up in the post that helped you.
    **Please mark the post that solves your problem as 'Accepted Solution'
  • [Deleted User]
    [Deleted User] Member

    This is an AWESOME example of community collaboration!

    Well done @Godiepi @cwolman  and @ST_-Superman-_ 

     

    Enjoy your new belts! You guys are all Super!

    Cheers!

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