6/1/01
     1)This excel spreadsheet will calculate "zemanim" (times of day for different Jewish obligations, including sunrise/sunset).
You enter only the date, latitude, longitude and time zone (in reference to greenwich (london UK) mean time)
  
     2)This is freeware and may be distributed without limitations
 
     3)If you would like to contact me for any question or difficulty my email address is: meyoz@yahoo.com

meir zirkind