When the length of day is measured with reference to the passage of the apparent Sun:
Domanda 388, General Navigation - ATPL - Airline Transport Pilot license
| The length of the days,as indicated by our watched, will be exactly equal. |
| The length of day will vary in the course of the year. |
| The length of the day will vary with the latitude of the observer. |
| The length of day will be the same once every month. |
