goog.locale.timeZoneDetection

Detects browser's time zone setting. If user's country is known, a better time zone choice could be guessed. Note that in many browsers this is available natively as new Intl.DateTimeFormat().resolvedOptions().timeZone.

Calculates time zone fingerprint by poking time zone offsets for 13 preselected time points. See goog.locale.timeZoneDetection.TZ_POKE_POINTS_

Returns an array of time zones that are consistent with user's platform setting. If user's country is given, only the time zone for that country is returned.

Allows disabling the use of native APIs so that the fingerprinting algorithm can be tested.

Whether to include the fingerprint algorithm so it can be used as a fallback. Without this, the code may be stripped for modern browsers that can be assumed to support the native API.

Whether to use the native API for time zone detection (if the runtime supports it). You might turn this off if a downstream system can't handle a user's timezone as reported by the browser.