The issue is fixed in the ArcGIS Pro 2.7 release. Refer to the link https://bit.ly/3Hjuh6K for more information. Specify the time zone for all date field in the Sharing pane before publishing from ArcGIS Pro.
解决办法
Publish to ArcGIS Server.
Set a new field to UTC using the Convert Time Zone tool. Ensure Time is unchecked.