North Atlantic Tracks (NATs) are daily high altitude transatlantic routes between western Europe and the eastern coast of North-America, which provide consistent separation between aircraft. Westward tracks are named incrementally from the beginning of the alphabet (A,B,C...), with the northernmost tracks named first. Similarly, eastward tracks are named incrementally from the end of the alphabet (Z,Y,X...), with the southernmost tracks named first. Daily updates for each direction allow for routing around weather systems and tracking of favourable tailwinds to improve efficiency.

The map below shows the current valid NATs and the upcoming published NATs, along with the permissible flight levels in each direction.
Track Valid From Valid To Route East Levels West Levels
A 17 Jul 1130 UTC 17 Jul 1900 UTC ERAKA 60/20 61/30 61/40 60/50 URTAK 310 320 330 350 360 370
A 16 Jul 1130 UTC 16 Jul 1900 UTC ERAKA 60/20 61/30 60/40 58/50 DORYY 310 320 330 340 350 360 370
B 17 Jul 1130 UTC 17 Jul 1900 UTC GOMUP 59/20 60/30 60/40 59/50 AVUTI 310 320 330 350 360 370 380 390
B 16 Jul 1130 UTC 16 Jul 1900 UTC GOMUP 59/20 60/30 59/40 57/50 HOIST 310 320 330 340 350 360 370 380 390
C 17 Jul 1130 UTC 17 Jul 1900 UTC SUNOT 58/20 59/30 59/40 58/50 CUDDY 310 320 330 340 350 360 370 380 390
C 16 Jul 1130 UTC 16 Jul 1900 UTC SUNOT 58/20 59/30 58/40 56/50 JANJO 310 320 330 340 350 360 370 380 390
E 17 Jul 1130 UTC 17 Jul 1900 UTC RESNO 56/20 57/30 56/40 53/50 RIKAL 310 320 330 340 350 360 370 380 390
F 16 Jul 1130 UTC 16 Jul 1900 UTC RESNO 56/20 57/30 56/40 54/50 NEEKO 310 320 330 340 350 360 370 380 390
F 17 Jul 1130 UTC 17 Jul 1900 UTC VENER 5530/20 5630/30 5530/40 5230/50 SAXAN 350 360 370 380 390
G 16 Jul 1130 UTC 16 Jul 1900 UTC DOGAL 55/20 56/30 55/40 53/50 RIKAL 310 320 330 340 350 360 370 380 390
G 17 Jul 1130 UTC 17 Jul 1900 UTC DOGAL 55/20 56/30 55/40 52/50 TUDEP 310 320 330 340 350 360 370 380 390
H 17 Jul 1130 UTC 17 Jul 1900 UTC MALOT 54/20 55/30 54/40 51/50 ALLRY 310 320 330 340 350 360 370 380 390
P 17 Jul 0100 UTC 17 Jul 0800 UTC ALLRY 51/50 52/40 53/30 54/20 DOGAL BEXET 320 330 340 350 360 370 380 390 400
Q 17 Jul 0100 UTC 17 Jul 0800 UTC ELSIR 50/50 51/40 52/30 53/20 MALOT GISTI 320 330 340 350 360 370 380 390 400
R 17 Jul 0100 UTC 17 Jul 0800 UTC JOOPY 49/50 50/40 51/30 52/20 LIMRI XETBO 320 330 340 350 360 370 380 390 400
S 17 Jul 0100 UTC 17 Jul 0800 UTC MUSAK 4830/50 4930/40 5030/30 5130/20 ADARA LEKVA 350 360 370 380 390
T 17 Jul 0100 UTC 17 Jul 0800 UTC NICSO 48/50 49/40 50/30 51/20 DINIM ELSOX 320 330 340 350 360 370 380 390 400
U 17 Jul 0100 UTC 17 Jul 0800 UTC OMSAT 4730/50 4830/40 4930/30 5030/20 RODEL EPUNA 350 360 370 380 390
V 17 Jul 0100 UTC 17 Jul 0800 UTC PORTI 47/50 48/40 49/30 50/20 SOMAX ATSUR 320 330 340 350 360 370 380 390 400
W 17 Jul 0100 UTC 17 Jul 0800 UTC SUPRY 46/50 47/40 48/30 49/20 BEDRA NASBA 320 330 350 360 380 390 400
X 17 Jul 0100 UTC 17 Jul 0800 UTC DOVEY 42/60 44/50 44/40 330 350 370 390
Y 17 Jul 0100 UTC 17 Jul 0800 UTC 43/50 46/40 47/30 48/20 48/15 OMOKO GUNSO 320 360 380 400
Z 17 Jul 0100 UTC 17 Jul 0800 UTC 40/50 45/40 46/30 47/20 47/15 ETIKI REGHI 320 360 380 400
Warning: Do not use this data for real-world aviation or navigation. No guarantee of current accuracy is given.