Hello DAVID,

On Saturday March 29 2008 10:05, you wrote to me:

 DW> I calculated that the ISS would see the sun when about 1/20 of the or-
 DW> bital circumference beyond the terminator on the ground. So that's a-
 DW> bout 18 degrees. So the orbit could be inclined as much as 18 degrees
 DW> away from the perpendicular to the earth-sun line and still have the
 DW> station in continuous sunlight. If, as someone said, the orbit is act-
 DW> usally inclined at about 52 degrees to the equator, and since the
 DW> earth's axis is tilted at 23.5 degrees, the ISS's orbit  might be til-
 DW> ted as much as about 75 degrees from the ecliptic, i.e. only 15 de-
 DW> grees from being perpendicular to it. 15 is less than 18, so, it seems
 DW> it *can* happen when things are aligned right that the station can
 DW> receive continuous sunlight for a while, until precession alters the
 DW> alignment.

That is what I meant. I was just to lazy to do the calculation.

Thanks for doing the leg work..

Cheers, Michiel

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