This panel displays Local Sidereal Time (LST), Pacific Standard Time (PST, never Daylight Time), and Greenwich Mean Time (GMT or UT). POCO gets its time from the Nickel POCO server, olympia, which in turn obtains its time signal from kronos, the Mt. Hamilton GPS time server. Note that the time used by the data-taking software, and therefore the time appearing in data FITS headers, is derived from a different machine (though also ultimately from kronos).
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