Local apparent time is 27.7 minutes behind the meridian time which here is Mountain Standard Time.
2.
Nevertheless, up to the Second World War, the old practice of keeping local apparent time prevailed on many independent merchant ships.
3.
For example, at 10 : 30 AM local apparent time the hour angle is-22.5?( 15?per hour times 1.5 hours before noon ).
4.
Having found the ( absolute ) Greenwich time, the navigator either compares it with the observed local apparent time ( a separate observation ) to find longitude or compares it with the Greenwich time on a chronometer if one is available.
5.
In particular, the committee noted that the autumnal equinox of year 144 was predicted to occur at 11 : 59 : 40 pm local apparent time in Paris, which was closer to midnight than its inherent 3 to 4 minute uncertainty.
6.
Since local apparent time could be determined with some ease, the problem centred on finding a means of determining ( or in the case of chronometers, keeping ) the time of the reference place when one is far away from it.
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