PPL(A) EN: The term 'civil twilight' is defined as...
Domanda 22, Navigation - PPL(A) English - Private Pilot License (Aircraft)
| The period of time before sunrise or after sunset where the midpoint of the sun disk is 6 degrees or less below the true horizon. |
| The period of time before sunrise or after sunset where the midpoint of the sun disk is 6 degrees or less below the true horizon. |
| The period of time before sunrise or after sunset where the midpoint of the sun disk is 12 degrees or less below the true horizon. |
| The period of time before sunrise or after sunset where the midpoint of the sun disk is 12 degrees or less below the apparent horizon. |
