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Re: Longitude by Sunrise example
From: Marcel Tschudin
Date: 2010 Feb 5, 09:19 +0200
From: Marcel Tschudin
Date: 2010 Feb 5, 09:19 +0200
Jeremy, your observation seem to have been made under fairly "normal" conditions: Date: 1st July 2009 Coordinates: Lat=16.5500�N, Lon=129.1250�E Atmosphere: Temperature=27.8�C, Pressure=1008hPa Height of eyes: 30m a.s.l. LL@Horizon: 9:58:16 UT (observed: 9:58:16 UT) UL@Horizon: 10:00:40 UT (observed: 10:00:48 UT) Observation and calculation agree better than what I generally would expect. As an additional information: Height of eyes: 2m a.s.l. LL@Horizon: 9:57:59 UT UL@Horizon: 10:00:23 UT (at this latitude the setting time at 2m is 17s earlier than at 30m) I hope these results are of use to you for further evaluating the data of your example. Marcel