National Institute of Standards and Technology

The U.S. Naval Observatory operates two “Master Clock” facilities, one in ... US Naval Observatory outside display of the master clock time. The U.S. Naval ...

Created with Raphaël HKT UTC+8 12 9 3 6.

United States Naval Observatory. Non-Contiguous U.S. and Territories. Alaska ... UTC is always displayed as a 24-hour clock. Your Device's Clock (UTC-8).

The U.S. Naval Observatory (USNO) provides a wide range of astronomical data and products, and serves as the official source of time for the U.S. Department ...

注意事項：. 使用不支援的瀏覽器可能出現反應緩慢或功能不齊的情況。網頁實際展示方式可能因瀏覽器、電腦及操作系統不同而異。

2022年11月16日 — The web clock regularly synchronizes with time servers of the Hong Kong Observatory. No time will be displayed if network connection is lost.

The Shepherd Gate Clock was installed at the gates to the Observatory, and was the first clock ever to show Greenwich Mean Time (GMT) directly to the public ...

Incredible technology meets beautiful craftsmanship, visit the clocks that changed the world. John Harrison's marine timekeepers are arguably the most ...

United States Naval Observatory. Non-Contiguous U.S. and Territories. Alaska ... UTC is always displayed as a 24-hour clock. Your Device's Clock (UTC-8). Today ...