K1LT:
>He logged RV6CC at 1013Z. RV1CC is in St. Petersburg, Russia. His
sunrise is 0654Z and sunset is 1316Z. So, K1LT worked a Russian
station 3 hours before his sunset, or 3.3 hours after his sunrise, or
close to noon his local time.
RV1CC is at ~60 degrees North, so the sun was at ~11 degrees
and almost due South of his QTH. This would be equivalent to you
working a DX station about ~1.25 hours before or after your local
sunrise/sunset...but not quite the same because the azimuth of the
sun for you is not due South (i.e. nearly opposite the signal
path). The important factor in any of these so called daylight paths
is the degree to which the sun illuminates the ionosphere on the
signal path. If you happen to be near the Arctic Circle (~67N), you
would have DX propagation around the clock in the winter. In the
late 80s, UA1OT was on from Franz Josef Land and was audible in
Colorado virtually any time there was darkness. I believe Roman
almost made WAS...only missing Utah.
73, Bill W4ZV
http://aa.usno.navy.mil/data/docs/AltAz.php
Astronomical Applications Dept.
U.S. Naval Observatory
Washington, DC 20392-5420
RV1CC
E 30 27, N59 55
Altitude and Azimuth of the Sun
Jan 26, 2008
Universal Time
Altitude Azimuth
(E of N)
h m o o
10:10 11.3 179.9
10:20 11.3 182.3
CARROLL, OHIO
W 82 43, N39 48
Altitude and Azimuth of the Sun
Jan 26, 2008
Eastern Standard Time
Altitude Azimuth
(E of N)
h m o o
08:50 10.2 125.1
09:00 11.8 126.9
16:20 12.8 231.9
16:30 11.3 233.8
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