The time-zone offset is the difference, in minutes, from local time to UTC. Note that this means that the offset is positive if the local timezone is behind UTC and negative if it is ahead. For example, for time zone UTC+10:00 (Australian Eastern Standard Time, Vladivostok Time, Chamorro Standard Time), -600 will be returned.
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Current Locale UTC-8 UTC UTC+3
Return Value 480 0 -180

ODC version done by Caio Sabino from Moxie Lead.