Automatic Timezone selection
When an option "Fill timezone based on the IP" is enabled, immediately before a browser profile is launched, Multilogin will first try to connect to its own servers through a connection that you set up in browser profile settings. After a successful connection, the backend will see your actual external IP address, the same address other websites will see.
Multilogin will then retrieve the corresponding timezone for this IP address from a continuously updated Ip2Geo database and set it in for the browser profile. This timezone will be used while the browser profile is opened.
Manual Timezone selection
Timezone can be also set manually. By disabling "Fill timezone based on the IP" you get access to the manual configuration form. You may then select the desired Timezone value from the list of standardized Unix Timezone values.