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A comment on Advanced Range Instrumentation Aircraft (2013).

Re:Advanced Range Instrumentation Aircraft (2013) by twic on Sunday July 21, 2019 @07:27PM (#20494349)
> The Timing Subsystem is a central timing facility for the ARIA electronic system. Its primary function is to generate time codes and precision pulse repetition rates which are recorded with the data to allow for time correlation in interpreting spacecraft events when the tapes are processed. In addition, the subsystem provides each equipment operator with displays of Coordinated Universal Time (UTC)

Oh wow, crazy: in 1969, the UTC time would have been a negative number!

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Re:Advanced Range Instrumentation Aircraft (2013) by euler_angles on Sunday July 21, 2019 @08:03PM (#20494501)
No, you're thinking of the UNIX epoch. UTC began in the early 1960s. https://en.wikipedia.org/wiki/Coordinated_Universal_Time

The IRIG standards for time codes also date to around this time.

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Re:Advanced Range Instrumentation Aircraft (2013) by danaliv on Sunday July 21, 2019 @11:17PM (#20495121)
UTC != Unix time. UTC is a standard by which time is measured, independent of any particular representation. Unix time is one way of representing or encoding a given point in time.
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