// Local Time -> UTC/GMT Time public static long convertLocalTimeToUTC(long pv_localDateTime) { long lv_UTCTime = pv_localDateTime; TimeZone z = TimeZone.getDefault(); //int offset = z.getRawOffset(); // The offset not includes daylight savings time int offset = z.getOffset(pv_localDateTime); // The offset includes daylight savings time lv_UTCTime = pv_localDateTime - offset; return lv_UTCTime; ..