Where and When is X Observed?

X-ray Time Zone is often used in aviation and the military as another name for UTC -11. X-ray Time Zone is also commonly used at sea between longitudes 172.5° West and 157.5° West.

The letter X may be used as a suffix to denote a time being in the X-ray Time Zone, such as 08:00X or 0800X. This is spoken as "zero eight hundred X-ray".

Only showing up to 16 cities, others may also be observing X-ray Time Zone.

This time zone is in use, but not observed in any location at this time.

Other Time Zones in UTC -11

Some time zones exist that have the same offset as X, but can be found under a different name:

• NUT – Niue Time
• SST – Samoa Standard Time

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