Quote:
Originally Posted by manaman
Can some one please help me find true south if my Longitude is 74.0 deg W and my Latitude is 410.5 N? Thanks
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True south is always 180 deg "true" . If you are using a compass, then you must add your magnetic deviation (declination), which you can compute at
NOAA's Geophysical Data Center - Geomagnetic Data
So it will be around a 193 or 194 compass heading for you (I can't tell what you meant to say for latitude... obviously not 410 )
Using a compass isn't very accurate. You can also use the sun. You can go to
Sun or Moon Altitude/Azimuth Table and find out what time of day the sun has an azimuth of 180 deg (be sure to correct for daylight time). Then go outside at that time and use shadows to tell what direction south is.
Your true south satellite will be the satellite closest to your longitude, ie SBS6 is at 74 deg.