Current UTC Time
The current date and time in Coordinated Universal Time, updating every second. Click any value to copy it.
Why UTC matters
UTC has no daylight saving offset, so timestamps stored in UTC are monotonically increasing and unambiguous. A server in London and a server in Sydney will agree on the UTC time even when their local clocks differ by ten hours and one is in summer.
The golden rule in backend engineering: store timestamps in UTC, convert to local time only at the point of display. This avoids the infamous “clock-change day” bugs where the same local time appears twice or a scheduled job fires an hour early — see When Do Clocks Change? for exact transition dates.
Frequently asked questions
What is UTC time?
UTC (Coordinated Universal Time) is the primary time standard used to regulate clocks worldwide. It is not affected by daylight saving time, making it the reliable baseline used in servers, databases, APIs, and log files. It replaced GMT as the international standard in 1972.
What is the difference between UTC and GMT?
In everyday use, UTC and GMT are essentially interchangeable — both sit at zero hours offset. Technically, GMT is an astronomical time standard while UTC is an atomic time standard that can include leap seconds. Most modern systems and APIs say UTC rather than GMT.
Why do log files use UTC?
Logs stored in local time become ambiguous on the day clocks change — the 1 AM hour appears twice in autumn, making it impossible to tell which entry came first. Logs from servers in different timezones also can't be merged without knowing each server's offset. UTC eliminates both problems: timestamps are monotonically increasing, globally consistent, and require no offset metadata.
Why do servers and databases store times in UTC?
UTC never changes for daylight saving, so arithmetic on UTC timestamps is always straightforward. If you store local times, a clock-change day produces ambiguous or duplicated timestamps. Storing UTC and converting to local time at display time is the standard best practice.
Is UTC+0 the same as UTC?
Yes. UTC+0 means zero hours offset from UTC, which is UTC itself. GMT and WET (Western European Time, outside summer) also run at UTC+0.