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calculate time zone or UTC

Question asked by jroganesri-ca-esridist

on Dec 19, 2017
Latest reply on Jul 30, 2018 by ichivite-esristaff

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Hello, I'm trying to calculate a custom string from a date and time using the now() function. This gives my the local time, which is fine, kinda. What I need to know is the timezone of this local time, or the zulu time. I'm using the info found at:

Dates and Time in Survey123 for ArcGIS

It would be great if there was a %timezone or something that returned the UTC offset but there isn't. Is there any way to calculate this? I'm wondering if it could be calculated out of a decimal date or something, but I'm limited to what I can use as a calculation in Survey123.

My goal is to write a military date-time group, EXAMPLE: 091630Z JUL 11 represents 1630 UTC on 9 July 2011. There is more to my final formatting than that though, saving it as a date/time object won't help.

Thanks!

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Philip.Wilson-esristaff

Dec 19, 2017 7:04 PM

Hi Joseph,

We do not currently have a property or parameter to return the UTC offset or timezone with a date/time question or in a string as part of a calculation. We have an open enhancement request to support UTC offset parameters and I have added your comments to the issue.

Regards,

Phil.

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JTedrick-esristaff

Apr 3, 2018 11:04 AM

Hi Jospeh,

With 2.7, Survey123 has just introduced UTC offset recording:

The function pulldata("@property", 'utcoffset') can now be used to capture and record the UTC time zone offset of the device.

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damienhoffman_usfs @ JTedrick-esristaff on Apr 4, 2018 1:37 PM

James,

Can you share an example or has this function been added to a sample template?

Thanks

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JTedrick-esristaff

@ damienhoffman_usfs on Apr 4, 2018 1:40 PM

Hi Damien,

You will find the function at the bottom of the updated 'Date & Time' template. It presents the offset in decimal hours (most timezones are an even number of hours off of UTC) to facilitate the addition. True addition in Survey123 will be to add the offset value to the time recorded to create a 'fake' local time when downloading from AGOL.

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r3weber @ JTedrick-esristaff on Jul 30, 2018 12:54 PM

James is there an example of this calculation somewhere? I know it should be pretty straightforward to apply the utcoffset to now() but I am confused as to formatting of these values.

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ichivite-esristaff

@ r3weber on Jul 30, 2018 4:53 PM

quick sample here. Do not forget to keep your UTC date as a string.

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6 Replies

Philip.Wilson-esristaff Dec 19, 2017 7:04 PM
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Hi Joseph,

We do not currently have a property or parameter to return the UTC offset or timezone with a date/time question or in a string as part of a calculation. We have an open enhancement request to support UTC offset parameters and I have added your comments to the issue.

Regards,
Phil.
2 people found this helpful
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JTedrick-esristaff Apr 3, 2018 11:04 AM
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Hi Jospeh,

With 2.7, Survey123 has just introduced UTC offset recording:

The function pulldata("@property", 'utcoffset') can now be used to capture and record the UTC time zone offset of the device.
1 person found this helpful
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- damienhoffman_usfs @ JTedrick-esristaff on Apr 4, 2018 1:37 PM
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  James,
  Can you share an example or has this function been added to a sample template?
  
  Thanks
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  - JTedrick-esristaff @ damienhoffman_usfs on Apr 4, 2018 1:40 PM
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    Hi Damien,
    
    You will find the function at the bottom of the updated 'Date & Time' template. It presents the offset in decimal hours (most timezones are an even number of hours off of UTC) to facilitate the addition. True addition in Survey123 will be to add the offset value to the time recorded to create a 'fake' local time when downloading from AGOL.
    1 person found this helpful
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    - r3weber @ JTedrick-esristaff on Jul 30, 2018 12:54 PM
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      James is there an example of this calculation somewhere? I know it should be pretty straightforward to apply the utcoffset to now() but I am confused as to formatting of these values.
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      - ichivite-esristaff @ r3weber on Jul 30, 2018 4:53 PM
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        quick sample here. Do not forget to keep your UTC date as a string.
        1 person found this helpful
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