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Professionals will find clear instructions on defining time zones and ensuring accurate data synchronization between client applications and back-end database stores. By addressing specific workflows for both hosted and non-hosted map or feature services, the guide ensures that temporal data is accurately represented, stored, and queried across GIS environments.",{"@graph":14,"@context":73},[15,34,56],{"@type":16,"itemListElement":17},"BreadcrumbList",[18,23,27,31],{"item":19,"name":20,"@type":21,"position":22},"https://docshare.wps.com","Home","ListItem",1,{"item":24,"name":25,"@type":21,"position":26},"https://docshare.wps.com/document/","Document",2,{"item":28,"name":29,"@type":21,"position":30},"https://docshare.wps.com/document/technology/","Technology",3,{"item":32,"name":10,"@type":21,"position":33},"https://docshare.wps.com/document/working-with-date-time-data-arcgis-technical-guide/290384/",4,{"url":32,"name":10,"@type":35,"image":36,"author":41,"headline":10,"publisher":44,"fileFormat":47,"inLanguage":8,"description":12,"dateModified":48,"datePublished":49,"encodingFormat":47,"isAccessibleForFree":50,"interactionStatistic":51},"DigitalDocument",{"url":37,"@type":38,"width":39,"height":40},"https://docshare.wps.com/thumbnails/working-with-date-time-data-arcgis-technical-guide/290384.png","ImageObject",300,407,{"name":42,"@type":43},"Ethan Miller","Person",{"url":19,"name":45,"@type":46},"DocShare","Organization","application/pdf","2026-10-08","2026-09-17",true,{"@type":52,"interactionType":53,"userInteractionCount":55},"InteractionCounter",{"@type":54},"ViewAction",11,{"@type":57,"mainEntity":58},"FAQPage",[59,65,69],{"name":60,"@type":61,"acceptedAnswer":62},"How are date field values represented in query results?","Question",{"text":63,"@type":64},"Date field values in query results are returned in UNIX Epoch Time, which represents the number of milliseconds elapsed since January 1, 1970, in UTC.","Answer",{"name":66,"@type":61,"acceptedAnswer":67},"What are the three ways to define time zones for date fields during publishing?",{"text":68,"@type":64},"You can define time zones using date fields in time-aware layers, editor tracking date fields (which can be set to UTC or database time), or by explicitly setting the time reference for other date fields in the layer.",{"name":70,"@type":61,"acceptedAnswer":71},"How does publishing differ for hosted versus non-hosted feature services regarding time zones?",{"text":72,"@type":64},"For hosted services, dates are converted to UTC upon copying to the back-end data store. 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Feature Services and Map Services  \n• Review how date fields have work  \n• Discuss new enhancements  \nDate Fields in Map Services and Feature Services  \nDate Field Values in Map Service / Feature Service  \n• Date field values in query results are returned in UNIX Epoch Time  \n- Milliseconds since Jan 1, 1970 in UTC  \n• Example:  \nDate Fields and Time Zones  \n• Results in UTC  \n- Need to define date fields time zones when publishing  \n• 3 ways to define date fields time zones  \n- Date fields described in time aware layers  \n- Editor tracking date fields in UTC  \n- Other date fields in the layer  \n• Any or none of these may be set when publishing  \nDate Fields in Time Aware Layers  \n• Time aware layers can be defined in ArcGIS Pro or ArcMap  \n• Properties include the time zone  \n• If no time zone set, date field values are assumed to be UTC  \nEditor Tracking Date Fields  \n• By default editor tracking fields are in UTC  \n• Can be set to be in database time  \n- Publishing will require date fields time reference to be set  \nOther Date Fields in the Layer  \n• Define date field data time zone when publishing  \n- Date fields time reference  \n• If no time zone set, date field values are assumed to be UTC  \nPublishing – Hosted FS  \n• Client specifies the time zone of the date fields when publishing  \n• Dates values are converted to UTC when copied into back end data store  \n• FS works directly with already converted UTC values  \n- Feature service time zone properties are all UTC  \nPublishing – Non-Hosted MS/FS  \n• Client specifies the time zone of the date fields when publishing  \n• MS / FS converts to UTC on the fly for query results  \n• FS converts from UTC to data's time zone when writing edits to database  \n- Feature service time zone properties are the time zone defined when publishing","cbCaig9mrkOV9S6k","https://ap.wps.com/l/cbCaig9mrkOV9S6k","pdf",2556421,23,"English","# Date-Time Data in ArcGIS Services\n## Overview\n## Date Fields in Services\n## Time Zone Configuration\n## Publishing Workflows\n### Hosted Feature Services\n### Non-Hosted Services","[{\"question\":\"How are date field values represented in query results?\",\"answer\":\"Date field values in query results are returned in UNIX Epoch Time, which represents the number of milliseconds elapsed since January 1, 1970, in UTC.\"},{\"question\":\"What are the three ways to define time zones for date fields during publishing?\",\"answer\":\"You can define time zones using date fields in time-aware layers, editor tracking date fields (which can be set to UTC or database time), or by explicitly setting the time reference for other date fields in the layer.\"},{\"question\":\"How does publishing differ for hosted versus non-hosted feature services regarding time zones?\",\"answer\":\"For hosted services, dates are converted to UTC upon copying to the back-end data store. For non-hosted services, the service performs on-the-fly conversion to UTC for queries and converts back to the database time zone when writing edits.\"}]","Working with Date-Time Data - ArcGIS Technical Guide | PDF",58]