Use the following chart to find the time zone for your device. The following two examples will show you how to find the correct time zone value:
Example 1: Let's assume your device is located in Sri Jayawardenepura, the time zone is 5.5, that is, UTC +05:30 (Chennai, Kolkata, Mumbai, New Delhi, Sri Jayawardenepura)
Example 2: If it is located in Newfoundland, the time zone is -3.5, that is, UTC -03:30 Newfoundland
Zone
Place names
UTC -11:00
International Date Line West, Midway Island, Samoa
UTC -10:00
Hawaii
UTC -09:00
Alaska
UTC -08:00
Pacific Time (US & Canada), Tijuana
UTC -07:00
Arizona, Chihuahua, Mazatlan, Mountain Time (US & Canada)
UTC -06:00
Central America, Central Time (US & Canada), Guadalajara, Mexico City, Monterrey, Saskatchewan
UTC -05:00
Bogota, Eastern Time (US & Canada, Indiana (East)), Lima, Quito
UTC -04:30
Caracas
UTC -04:00
Atlantic Time (Canada), La Paz, Santiago
UTC...