X-ray Time Zone (X) is 11 hours behind Coordinated Universal Time (UTC). This time zone is a military time zone.
See full time zone mapWhere 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".
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".
Some places with the same time as X-ray Time Zone
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: