The hand history time is written by the poker site and not by Holdem Manager. The hand history time zone, computer time zone and Holdem Manager time zone are sometimes different. Use the Site Time Adjustment function to synchronise the time between the poker site, Holdem Manager and the computer.  

Note: Daylight savings time will affect HM's Site Time Adjustments.  Clicking Auto Detect in site time adjustments will fix this for most users.
 

• Click the Auto Detect button and Holdem Manager will automatically adjust the settings to the correct time difference.
• Occasionally, the Site Time Adjustment has to be manually adjusted. For example, if the poker client's browser time zone is different than the poker client's hand history time zone, Holdem Manager could Auto Detect the browser time zone. If this occurs, Holdem Manager must be manually adjusted to reflect the difference between the Holdem Manager time zone and the poker client's hand history time zone. 
  • This can be done by hilighting the SiteName that needs to be adjusted and clicking the Edit button.