D365 - Set User Default Time Zone

（1）Install and open User Settings Utility in XrmToolBox

Open User Settings Utility

（2）Load user information

Load User Information

（3）Select and check the users, choose the desired time zone, and finally click Update User Settings

Update User Settings

Additionally, you can also query the current time zone of users via SQL:

SELECT s.fullname AS UserName,
       s.businessunitidname AS BusinessUnit,
       s.domainname AS Domain,
       us.timezonecode AS TimeZoneCode,
       tz.standardname AS TimeZoneName
FROM   systemuser AS s
       INNER JOIN
       usersettings AS us
       ON s.systemuserid = us.systemuserid
       INNER JOIN
       timezonedefinition AS tz
       ON us.timezonecode = tz.timezonecode
WHERE  s.isdisabled = 0;

Query User Time Zone via SQL

SQL Field Description

#	Field	Description
1	UserName	Full name of the user.
2	BusinessUnit	The business unit to which the user belongs.
3	Domain	The user’s domain account (e.g., `contoso\johndoe`).
4	TimeZoneCode	The numeric code that represents the time zone in Dynamics 365.
5	TimeZoneName	The standard name of the time zone (e.g., Pacific Standard Time).