G3AQC----------------------ZL4OL
Sunset in QTH Laurie G3AQC at March 8 - abt 1750z
Sunrise in QTH Mike ZL4OL - abt 1830z
Common dark time abt 40 min
Bearing path (short) (G3AQC) 51.6 degr
Bearing path (short) (ZL4OL) 314.8 degr
Distance abt 19160km (abt 20860km Long path)

The path G-ZL passes on the countries : UA1, UA9, JT,
BY, DU, YB(east), VK(east) - abt 8 or 9 hops (?)
The most northern part of a path rises up to 62 degr North
Auroal oval now on http://www.sec.noaa.gov/pmap/pmapN.html is not so
bad for this path (abt North of SM at 13z)

I believe a path YU7AR--------------------ZL4OL is quite good
Sunset in QTH Teo YU7AR at March 9 - abt 1630z
Sunrise in QTH Mike ZL4OL - abt 1830z
Common dark time abt 2 h
Bearing path (short) YU7AR 100 degr
Bearing path (short) ZL4OL 281 degr
Distance abt 17730km
The path YU7AR-ZL4OL passes on the countries : 4K, VU, Indian Ocean,
VK6 - abt 8 or 9 hops (?)

YU7AR----------------------ZL2CA
Sunset in QTH Teo YU7AR at March 9 - abt 1630z
Sunrise in QTH Bob ZL2CA - abt 1815z
Common dark time abt 1h 45m
Bearing path (short) YU7AR 85 degr
Bearing path (short) ZL2CA 293 degr
Distance abt 17900km
The path YU7AR-ZL2CA passes on the countries : UA6(east), VU, 9V,
YB(center), VK8, VK3 - abt 8 or 9 hops (?)

I believe a path G3AQC--------------------ZL2CA is not so good under
wide auroral oval
Sunset in QTH Laurie G3AQC at March 9 - abt 1750z
Sunrise in QTH Bob ZL2CA - abt 1815z
Common dark time abt 25min
Bearing path (short) G3AQC 19.5 degr
Bearing path (short) ZL2CA 344 degr
Distance abt 18900km (abt 21130km Long path)
The path G3AQC-ZL2CA passes on the countries : LA, Arctic, UA0,
Pasific Ocean - abt 8 or 9 hops (?)
The most northern part of a path rises up to abt 78 degr North

I have found interesting ;-)) variant CT1DRP--------ZL2CA
Sunset in QTH Brian CT1DRP at March 22 (equinox) - abt 1845z
Sunrise in QTH CT1DRP - abt 0640z
Sunrise in QTH Bob ZL2CA - abt 1830z
Sunset in QTH ZL2CA - abt 0625z
Common dark time abt 15min (0625-0640z)
Bearing path (short) CT1DRP 266 degr
Bearing path (short) ZL2CA 91 degr
Distance (West) abt 19740km (long path - East - 20290km)
The path CT1DRP-ZL2CA (West) passes on the countries : Atlantic Ocean,
Carribian, Pasific Ocean
It is practically antipodes (antipoddes EA3-ZL2)
Practically same data for EA1PX--------ZL2CA

The path CT1DRP-------ZL4OL passes near to poles and practically there
is no common dark time, but passes lengthways of grey line (!) at
March 9 in 1830z and 7z