The device's timezoneOffset for the request, header or local clock being
rendered: the offset its zone (timezoneName) means at that moment — a real
device reads getOffset(now), so the reported offset follows a
daylight-saving change — or the stored timezoneOffset when the device names
no zone (a device that only knows the host's offset).
The device's
timezoneOffsetfor the request, header or local clock being rendered: the offset its zone (timezoneName) means at that moment — a real device readsgetOffset(now), so the reported offset follows a daylight-saving change — or the storedtimezoneOffsetwhen the device names no zone (a device that only knows the host's offset).