Trouble keeping your sunsets straight from your civil twilights? Can't remember when your TOMATOFLAMES require FLAPS? Find USNO astronomical tables confusing? We've got your back.

Plug in your airport ID, and optionally a date, below and we'll tell you what the Federal Aviation Regulations say about what you need to fly and what you can log.

GRAND FORKS INTL

GRAND FORKS, ND

2025-04-28

Until Sunrise and after Sunset...

Sunrise Sunset
06:15 AM 08:38 PM

Position lights required.
(14 CFR 91.209(a))

Until the start of civil twilight and after the end of civil twilight...

Start of civil twilight End of civil twilight
05:41 AM 09:12 PM

Night time can be logged and aircraft must be night equipped.
(14 CFR 61.51(b)(3)(i), 14 CFR 91.205(c), and 14 CFR 1.1)

Until one hour before Sunrise and after one hour after Sunset...

One hour before Sunrise One hour after Sunset
05:15 AM 09:38 PM

Must be night current to carry passengers, and takeoffs and landings count towards currency.
(14 CFR 61.57(b))