Dear all,
I am using the following function in order to obtain the bias between local
time and UTC:
function GetTimeZoneBias_min(): Integer;
var tz: TTimeZoneInformation;
begin
case GetTimeZoneInformation(tz) of
TIME_ZONE_ID_STANDARD: Result := -(tz.StandardBias + tz.Bias);
TIME_ZONE_ID_DAYLIGHT: Result := -(tz.DaylightBias + tz.Bias);
else
Result := 0;
end;
end;
and I use the result Res in the formula: locla_time = UTC + Res.
Now, I would like to obtain the bias not at the current time, but according to
a given UTC value.
For example, now UTC is 9:47 at the 27th of october,
but how to obtain the bias when UTC was, for example, 8:35 at the 5th of july?
How to do it?
Regards and thanks for help.
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