Zulu Time Now
--:--:-- Z
iPhone
The military clock built for professionals. NTP-synced UTC with NATO time zone letters — always precise, never guessed.
Built for professionals who can't afford to be wrong.
Pilots & Aviation
File flight plans, check METARs, and coordinate clearances with confidence. ICAO mandates Zulu time for all international aviation communications — no exceptions.
Military & SAR Operations
Coordinate global operations without daylight-saving confusion. One universal clock across all theaters — from the Arctic to the Pacific. Zero ambiguity when it matters most.
HAM Radio & Emergency Services
Log QSOs accurately, sync with FEMA networks, and coordinate HF contacts. UTC is the international amateur radio standard — and Zulu Time keeps you on it.
Always on. Lock Screen to Home Screen.
Small and medium widgets display live Zulu time and your local time simultaneously. No unlock, no delay — glance at your iPhone and know the time instantly. Available for Home Screen and Lock Screen.
Zulu time. Always precise.
NTP-synchronized to atomic time servers, the display never drifts. Your Zulu time is shown with NATO phonetic time zone letters — Z for UTC, A through Y for military zones worldwide. Built for professionals who need to be right the first time, every time.
Swipe the map. Shift the time.
Drag the interactive world map to shift your reference point and instantly see Zulu time alongside local times for any theater of operations. Plan transatlantic routes, coordinate multi-zone ops, or time an HF contact — all at a glance.
Features.
NTP-synced atomic accuracy — never off by a second.
Full NATO time zone letters: Z, A–Y displayed next to every zone.
24-hour military format — clean display, no AM/PM ambiguity.
Home Screen and Lock Screen widgets showing live Zulu + local time.
Multi-zone display: track local, New York, Dubai, Tokyo and more at once.
Military Time Zone Letters
NATO uses a phonetic letter for every UTC offset instead of abbreviations like "EST" or "PST". This eliminates ambiguity across nations, languages, and theaters of operations. Z (Zulu) is UTC+0 — the universal reference. Letters A–M cover positive offsets east of Greenwich; N–Y cover negative offsets to the west. J (Juliet) is reserved for local time and not assigned a fixed offset.
Zulu Time — Frequently Asked Questions
Everything professionals need to know about UTC, military time, and NATO zones.
Zulu time is the informal name for Coordinated Universal Time (UTC), designated by the suffix "Z" — the NATO phonetic alphabet letter for zero offset. It is the world's primary time standard used in aviation, military operations, maritime navigation, and amateur radio. Unlike local times, Zulu time never changes for daylight saving, making it a universal reference everyone can rely on.
ICAO (the International Civil Aviation Organization) mandates Zulu time for all international aviation operations — flight plans, weather reports (METARs, TAFs), NOTAMs, and air traffic control communications. Using a single universal time eliminates confusion when an aircraft crosses multiple time zones in a single flight. A departure in New York and an arrival in London both reference the same Z time, ensuring no scheduling ambiguity.
Zulu time and UTC represent the same time — they are functionally identical. "Zulu" is the military and aviation designation using the NATO phonetic alphabet, while "UTC" (Coordinated Universal Time) is the scientific and civil standard. Both are at zero offset from the prime meridian and neither observes daylight saving time. GMT (Greenwich Mean Time) is also essentially the same, though UTC is the formal successor maintained by atomic clocks.
NATO military time zones assign a single letter to each hour offset around the globe. Z (Zulu) = UTC+0. Moving east: A (Alpha) = UTC+1, B (Bravo) = UTC+2, and so on through M (Mike) = UTC+12. Moving west: N (November) = UTC−1, O (Oscar) = UTC−2, through Y (Yankee) = UTC−12. J (Juliet) is reserved for the observer's local time. The Zulu Time app displays these letters alongside each city's time so you instantly know the military zone without any conversion.
Zulu time is used by: commercial and military pilots for all international flight operations; military personnel and defense contractors coordinating across global theaters; coast guard, naval vessels, and maritime crews at sea; amateur (HAM) radio operators who log contacts and schedule nets in UTC; emergency management agencies (FEMA, CERT) and first responders running inter-agency operations; meteorologists filing and interpreting weather data; and space agencies (NASA, ESA) which use UTC for all mission timing.
No. Zulu time (UTC) never changes for daylight saving time. This is one of the primary reasons professionals rely on it — your offset from Zulu shifts when your local clock changes, but Zulu itself stays constant. For example, New York is UTC−5 in winter (Z−5) and UTC−4 in summer (Z−4). Zulu time never moves; your local offset does.
Ready to fly with precision?
Always-precise Zulu time on your iPhone and wrist. NTP-synced, NATO letters, live widgets — built for the professionals who rely on it.