Supporting UTC
The Server Time Zone setting in the sitecore.config file supports date/time types.
This setting specifies the server time zone that the server uses to convert UTC time to local time, for example, GMT Standard Time. This setting affects Experience Analytics.
The value must be a valid Microsoft .NET time zone name (for example, Central Standard Time), not a numeric ID. Numeric values like 620 won’t work.
If the value is blank, Sitecore uses the operating system time zone.
RequestResponse
<!-- SERVER TIME ZONE
The value must be a valid time zone name from the Microsoft .NET time zone database.
For example: "Central Standard Time", "Pacific Standard Time", "UTC"
Do NOT use numeric IDs like "620" — they are not supported.
-->
<setting name="ServerTimeZone" value="Central Standard Time"/>