Explore every state, the District of Columbia, all nine federal standard zones, and the eleven live clock regimes needed to represent Arizona, Navajo and Hopi lands, Hawaii, the Aleutians, and U.S. territories correctly.
Live-clock mode shows current IANA rule regions, including DST exceptions. Select a state, then focus the map to inspect small and split-zone areas.
These complete the three federal zones not used by a state.
Nine official standard zones produce eleven distinct live clock regimes because Arizona and Hawaii handle daylight saving differently from neighboring parts of their federal zones.
Enter a wall-clock time in any source zone. The planner detects skipped and repeated DST times, compares all U.S. regimes, marks normal working hours, and can create a calendar file.
| Clock regime | Local date | Local time | UTC offset | Day relation | Working hours |
|---|
The directory gives every state a keyboard- and mobile-friendly live-time view, including both clocks for split states and the Arizona DST exception.
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Disclaimer: This interactive map and meeting planner provide civil time zone estimates based on current IANA rule registries (including daylight saving configurations for Arizona, Hawaii, and Navajo nation lands) for general scheduling, educational, and routing purposes only. Because local geopolitical boundaries, specific municipal exceptions, and actual boundary lines defined by the U.S. Department of Transportation (49 CFR Part 71) are subject to official structural revisions, these maps do not constitute binding legal authority or automated dispatch metrics. Users are strongly advised to cross-reference time calculations against official sources like the National Institute of Standards and Technology (NIST) or the Bureau of Transportation Statistics geospatial portals before scheduling high-stakes commercial operations.
Disclaimer: The content provided on this webpage is for informational purposes only and is not intended to be a substitute for professional advice. While we strive to ensure the accuracy and timeliness of the information presented here, the details may change over time or vary in different jurisdictions. Therefore, we do not guarantee the completeness, reliability, or absolute accuracy of this information. The information on this page should not be used as a basis for making legal, financial, or any other key decisions. We strongly advise consulting with a qualified professional or expert in the relevant field for specific advice, guidance, or services. By using this webpage, you acknowledge that the information is offered “as is” and that we are not liable for any errors, omissions, or inaccuracies in the content, nor for any actions taken based on the information provided. We shall not be held liable for any direct, indirect, incidental, consequential, or punitive damages arising out of your access to, use of, or reliance on any content on this page.
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