One thing that can cause confusion when troubleshooting is time logging, particularly as components can use different values.

 V6  logs as follows:

• Service/TngService.svc:  The initial startup is reported in UTC.  Events are timestamped with with UTC values, with an exception being the initialisation event.  This is reported in the server's regional time (incorrectly marked as Z), as follows:
  
  2020-09-18 07:59:18.381 TngService initialization completed at: 2020-09-18 03:59:18Z

• WebService/TngWebService.svc:  The Web service logs in UTC.
  
  
• Pentana Robot:  Initial startup is logged in UTC, but some jobs log firing in local time.   More details at:  https://pentanaaudit.help.ideagen.com/hc/en-gb/articles/360014467079-Pentana-Audit-Inconsistencies-in-Robot-activity-logging
  
  
• IIS:  IIS logs in UTC
  
  
• In the database, log entries (the *_log.ByTime columns) use UTC