Backend analytics cannot be forced to use the Time Zone dedicated to the Job or Workflow object.
The only way to force Backend Analytics to take a Time Zone Reference that comes from One Automation is to assign the TZ either to client object or user object.
Refer therefore to the documentation to read more about this;https://docs.automic.com/documentation/webhelp/english/AWA/12.1/DOCU/12.1/AWA%20Guides/help.htm#AWA/Dashboards/awi_dashboards_widgets_analytics.htmsearchOnline
Extracted from the link above
To set the TZ for analytics widget you need to define a TZ on the User or Client Level with the name "TZ.CET" (See link above for all supported timezones)
For european customers, the name of the TZ object for the user or client must be either "TZ.CET" or "TZ.MET".