Replace " ? " 2 with declination and longitude difference with hour angle, and change the sign ( since the hour angle is positive westward instead of east ).
32.
Using a nautical almanac, the declination ( celestial latitude ), and the Greenwich hour angle ( celestial longitude ) are obtained of the observed object for the time of observation.
33.
At solar noon the hour angle is 0.000 degree, with the time before solar noon expressed as negative degrees, and the local time after solar noon expressed as positive degrees.
34.
Positions on the celestial sphere are often expressed using two coordinates : declination and sidereal hour angle, which are similar to latitude and longitude on the surface of the Earth.
35.
The Capuchin sundials are constructed and used graphically, as opposed the direct hour-angle measurements of horizontal or equatorial dials; or the calculated hour angle lines of some altitude and azimuth dials.
36.
The 75-year-old angler, who stays in fishing shape by bicycling and skiing on a regular basis, was also unaware of the new DFG regulation that allows 24-hour angling in Mono County.
37.
Note that H _ \ text { RD } advances anticlockwise with respect to the zero hour angle for those dials that are partly south-facing and clockwise for those that are north-facing.
38.
Sidereal hour angle is a measurement between 0 and 360 degrees, indicating how far west a body is from an arbitrarily chosen point on the celestial sphere called the First Point of Aries.
39.
If time was short this orientation usually used an integral compass, but was updated by calculation ( azimuth by hour angle or azimuth by Polaris ) or'carried'by survey techniques from a survey control point.
40.
The actual declination and hour angle of the celestial body are found from astronomical tables for the time of the measurement and together with the'True Altitude'are put into a formula with the assumed latitude.
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