How to Convert Time Zones Without the Confusion

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To convert time zones easily, always use UTC as your middleman. First note the local time and its offset from GMT, like Eastern Daylight Time is UTC−4. Add or subtract the difference to get UTC, then apply the target zone's offset. For quick mental math, remember that for every 15° difference in longitude, time shifts by one hour. Keep a chart of common pairings, like New York and London being 5 or 4 hours apart depending on daylight saving.