Western France, Spain, and other areas skew time zones and shift clocks, in effect observing DST in winter with an extra hour in summer. Nome, Alaska, is at 165°24′ W longitude, which is just west of center of the idealized Samoa Time Zone (165° W), but Nome observes Alaska Time (135° W) with DST, so it is slightly more than two hours ahead of the sun in winter and three in summer. Double daylight saving time has been used on occasion; for example, it was used in some European countries during and shortly after World War II when it was referred to as "Double Summer Time". See British Double Summer Time and Central European Midsummer Time for details.
స్పెయిన్, ఫ్రాన్స్లోని కొన్ని ప్రాంతాలు శీతాకాలంలో డిఎస్టి ద్వారా సమర్థవంతంగా వెళ్తాయి, కానీ వేసవిలో ఏమి జోడిస్తుంది?
an extra hour