ISO 8601
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세계 기준 시간
Check the current UTC time with milliseconds, compare it with your local timezone, and convert local date-time values into UTC, ISO 8601, and Unix time.
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Use the timestamp and ISO converters when UTC values need to move into APIs, logs, or databases.
UTC, or Coordinated Universal Time, is the global reference time used by systems, aviation, software, logs, and international coordination.
GMT is a historical reference timezone, while UTC is the modern time standard. They often show the same clock time.
UTC avoids daylight saving ambiguity and makes events from different locations easier to compare.