X-ray time now |
03:52:34 Mon, 4 Aug 2025
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UTC Offset: UTC -11 |
X-ray Time Zone (X) corresponds to UTC−11:00, placing it eleven hours behind Coordinated Universal Time. It is used primarily in military, aviation, and maritime operations for standardized, phonetic-based timekeeping. In civilian usage, this offset applies to regions such as American Samoa, Niue, and Midway Atoll, part of the United States Minor Outlying Islands.
Importance and Global Use of X-ray Time Zone
X-ray Time is important in military coordination, navigation, and international aviation, where clear time communication is essential. The "X" designation eliminates ambiguity in global missions and ensures precise synchronization, especially near the International Date Line where date transitions occur.
In the civilian context, UTC−11:00 is observed consistently throughout the year without daylight saving adjustments. It supports local administration and communication for small Pacific territories and is also referenced in technical systems, broadcast scheduling, and global deadline settings that require fixed time zones.
Where and When X-ray time is used worldwide

X-ray Time is used globally as a standardized time reference in military and technical systems, and locally in a few Pacific territories. It aligns with UTC−11:00 and is geographically applicable between approximately 157.5° West and 172.5° West longitude.
Time entries often include the suffix "X", such as 08:00X or 0800X, pronounced "zero eight hundred X-ray". This ensures clear and consistent timekeeping across defense, aviation, and international operations.
Some locations with the same time as X-ray time:
Other Time Zones in UTC -11
Other time zones share the same offset as X-ray Time Zone (X), but are known by different names. While their clocks align, they may represent different regions or countries based on local time zone definitions.