Symbolen ‡ i A / FD anger att platsen beaktar sommartid.
Detta är från A / FD-legenden, som kan hittas online genom att gå till online digital A / FD och letar efter en flygplats. Länken A / FD Legend kommer då att vara högst upp i sökresultaten (länken ändras varje cykel så att jag inte kan inkludera en exakt länk).
6 TIME CONVERSION
Hours of operation of all facilities are expressed
in Coordinated Universal Time (UTC) and shown as ‘‘Z’’ time. The
directory indicates the number of hours to be subtracted from UTC to
obtain local standard time and local daylight saving time UTC–5(–4DT).
The symbol ‡ indicates that during periods of Daylight Saving Time
effective hours will be one hour earlier than shown. In those areas
where daylight saving time is not observed the (–4DT) and ‡ will not
be shown. Daylight saving time is in effect from 0200 local time the
second Sunday in March to 0200 local time the first Sunday in
November. Canada and all U.S. Conterminous States observe daylight
saving time except Arizona and Puerto Rico, and the Virgin Islands. If
the state observes daylight saving time and the operating times are
other than daylight saving times, the operating hours will include the
dates, times and no ‡ symbol will be shown, i.e., April 15–Aug 31
0630–1700Z, Sep 1–Apr 14 0600–1700Z.