Sunrise and Sunset times for Ramadan
No app but this is what we use. You will need to get the actual sunset and sunrise time over the location ( LIDO or Jepp tables) you are flying over and calculate as indicated below
Sunset and sunrise time differences from ground to air can be approximated by using 1 minute and 30 seconds per 5000ft. E.g. Sunrise on ground in Dubai is at 05:30. To approximate sunrise time at FL 350: 35000 / 5000 = 7 7 x 1.5 = 10.5 minutes. Approximate sunrise time at FL 350 is.05:30 MINUS 10.5 min = 05:19 Sunset on ground in Dubai is at 19:15. To approximate sunset time at FL 350: 35000 / 5000 = 7 7 x 1.5 = 10.5 minutes. Approximate sunset time at FL 350 is. 19:15 PLUS 10.5 min = 19:26
BM