Updated 'Default times' subsection
The 'Default times' subsection will be updated with the 'Sunset/Sunrise dependent' settings.
The setup and calculations will work as follows:
All day - if this checkbox is ticked, the rest of the options within the 'Default times' subsection remain inactive. Unticking it will activate the remaining fields
Sunset/Sunrise dependent - option to activate the calculations based on Sunset and Sunrise
Sunrise offset - number of minutes against the time of the sunrise. Can be inserted as a positive (30), negative (-30), empty, or zero value. Positive value will indicate the timeframe after the sunset/sunrise, and the negative value will indicate the timeframe before the sunset and sunrise
Sunset offset - number of minutes against the time of the sunset. Values are adequate to the ones explained above
From - fixed time for the start of the duty
To - fixed time for the end of the duty
Adding duty with sunset and sunrise setting activated
As per the screenshot on the right-hand side, adding the duty with the 'Sunset/Sunrise dependent' option activated blocks the possibility of changing the timeframes.
The duty is added on the 1st of March for EPWA airport with the sunrise at 06:21LT and the sunset at 17:17LT.
The duty definition from the screenshot has the following timeframe settings:
Sunset/Sunrise dependent - activated
Sunrise offset - set to '30' which indicates 30 minutes after the sunrise, ie 06:21LT + 00:30 = 06:51LT
Sunset offset - set to '-30' which indicates 30 minutes before the sunset, ie 17:17LT - 00:30 = 16:47LT
From - set to 06:00 in UTC
To - set to 20:00 in UTC
Based on the conditions, the duty times, including the duty times for FTL calculations purposes, are set as per below:
Duty start - 06:00UTC, because fixed 06:00UTC (07:00LT) is later than the sunrise time plus the sunrise offset of 06:51LT
Duty end - 15:47UTC, because the sunset minus the sunset offset of 15:47UTC (16:47LT) is earlier than fixed 20:00UTC (21:00LT)