We recently deployed an ArcGIS Online app made in web appbuilder for our customers to help communicate electric power outages. The map is viewable to the public.
We have received feedback from a few customers that the ETR (Est. Time to Restore) and Date Off Fields are showing incorrect times which are several hours in the future. When I investigated I realized that they were seeing the times displaying using the UTC timezone, and not the Central US Timezone timezone that all our data is published in, and so all the timestamps are appearing to them as +5 hours. The feature service was configured when it was created to be in the Central Timezone. During testing, we noticed during testing that the time fields will display in whatever timezone the viewing device is using, so we have hypothesized that the customers reporting this error must have something interfering with the map's ability to detect their timezone, and so the map is defaulting to UTC. Getting more detail on the devices from the customer is a challenge, and not likely to happen.
Is there a way to change the app, map, or feature service so that all times will always display in the Central Timezone? We do not have any customers outside of Central Time, and so having the timestamps altered automatically like this simply generates more confusion.