[Duffy]

Roger

Your first file showed 7 sun hits and 2 moon hits, you altered perimeters for the moon and your second file reads as 5 sun hits and 6 moon hits ... what happened to the 2 previously recorded sun hits ?.   The following is my sun hit list between 16th - 28th Jan ...

16th Jan M 5.8 Vanuatu .............................. 01:16:38 ut ... CS 163' 16' E ( 163' 59' E - 12th Jan )
17th Jan M 5.1 Vanuatu .............................. 01:17:49 ut ... CS 163' 03' E ( 163' 59' E - 12th Jan )
18th Jan M 5.7 Central Italy ........................ 10:14:10 ut ... CS   29' 05' E (   28' 53' E - 15th Jan )
18th Jan M 5.6 Central Italy ........................ 10:25:25 ut ... CS   26' 16' E (   25' 36' E -  7th Jan )
19th Jan M 5.0 West Indian Antarctic Ridge . 10:15:57 ut ... CS   28' 43' E (   28' 53' E - 15th Jan )
21st Jan M 5.2 New Britain Region P.N.G. .... 01:52:32 ut ... CS 154' 41' E ( 154' 29' E - 18th Jan )
21st Jan M 5.7 Halmahera, Indonesia .......... 05:16:31 ut ... CS 103' 42' E ( 103' 22' E - 10th Jan )
21st Jan M 5.0 Banda Sea ........................... 06:30:49 ut ... CS  85' 08' E (   85' 34' E - 18th Jan )
23rd Jan M 5.1 Northern Mid-Atlantic Ridge . 10:17:15 ut ... CS  28' 40' E (   28' 53' E -  15th Jan )
24th Jan M 5.0 South Georgia Island Region  02:38:40 ut ... CS 143' 21' E ( 144' 11' E - 15th Jan )


16th to 28th Jan = 10 sun hits

I have used NEIC records and http://www.fourmilab.ch/cgi-bin/Earth to determine these times and locations.  In each case, the sun is within +/- 1 degree of the bearings posted in the table. I can only conclude that either the formilab data is wrong, or you have a bug in your program.   If it is the latter, and is giving unreliable results over such a short period, it would also be fair to assume the 1973 run is also in question !  

I used the same source of information as you did, perhaps you should check my source to confirm we are not miss-understanding my results as being due to human error.


Duffy