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 24 Jan 1130 UTC 24 Jan 1900 UTC DOGAL 55/20 57/30 57/40 56/50 JANJO 310 320 330 340 350 360 370 380 390
B 24 Jan 1130 UTC 24 Jan 1900 UTC NEBIN 5430/20 5630/30 5630/40 5530/50 KODIK 350 360 370 380 390
C 24 Jan 1130 UTC 24 Jan 1900 UTC MALOT 54/20 56/30 56/40 55/50 LOMSI 310 320 330 340 350 360 370 380 390
D 24 Jan 1130 UTC 24 Jan 1900 UTC TOBOR 5330/20 5530/30 5530/40 5430/50 MELDI 350 360 370 380 390
E 24 Jan 1130 UTC 24 Jan 1900 UTC LIMRI 53/20 55/30 55/40 54/50 NEEKO 310 320 330 340 350 360 370 380 390
P 25 Jan 0100 UTC 25 Jan 0800 UTC ELSIR 50/50 52/40 54/30 55/20 RESNO NETKI 320 330 340 350 360 370 380 390 400
Q 25 Jan 0100 UTC 25 Jan 0800 UTC JOOPY 49/50 51/40 53/30 54/20 DOGAL BEXET 320 330 340 350 360 370 380 390 400
R 25 Jan 0100 UTC 25 Jan 0800 UTC MUSAK 4830/50 5030/40 5230/30 5330/20 NEBIN OLGON 350 360 370 380 390
S 25 Jan 0100 UTC 25 Jan 0800 UTC NICSO 48/50 50/40 52/30 53/20 MALOT GISTI 320 330 340 350 360 370 380 390 400
T 25 Jan 0100 UTC 25 Jan 0800 UTC OMSAT 4730/50 4930/40 5130/30 5230/20 TOBOR RILED 350 360 370 380 390
U 25 Jan 0100 UTC 25 Jan 0800 UTC PORTI 47/50 49/40 51/30 52/20 LIMRI XETBO 320 330 340 350 360 370 380 390 400
U 24 Jan 0100 UTC 24 Jan 0800 UTC TUDEP 52/50 55/40 57/30 57/20 SUNOT KESIX 320 330 340 350 360 370 380 390 400
V 25 Jan 0100 UTC 25 Jan 0800 UTC RELIC 4630/50 4830/40 5030/30 5130/20 ADARA LEKVA 350 360 370 380 390
V 24 Jan 0100 UTC 24 Jan 0800 UTC UMESI 5130/50 5430/40 5630/30 5630/20 BILTO BEGID 350 360 370 380 390
W 25 Jan 0100 UTC 25 Jan 0800 UTC SUPRY 46/50 48/40 50/30 51/20 DINIM ELSOX 320 330 340 350 360 370 380 390 400
W 24 Jan 0100 UTC 24 Jan 0800 UTC ALLRY 51/50 54/40 56/30 56/20 PIKIL SOVED 320 330 340 350 360 370 380 390 400
X 25 Jan 0100 UTC 25 Jan 0800 UTC RAFIN 45/50 47/40 49/30 50/20 SOMAX ATSUR 320 330 340 350 360 370 380 390 400
X 24 Jan 0100 UTC 24 Jan 0800 UTC ELSIR 50/50 53/40 55/30 55/20 RESNO NETKI 320 330 340 350 360 370 380 390 400
Y 24 Jan 0100 UTC 24 Jan 0800 UTC DOVEY 42/60 44/50 44/40 330 350 370
Y 25 Jan 0100 UTC 25 Jan 0800 UTC DOVEY 42/60 44/50 46/40 48/30 49/20 BEDRA NASBA 320 330 340 350 360 370 380 390 400
Z 25 Jan 0100 UTC 25 Jan 0800 UTC MUNEY 41/60 43/50 45/40 47/30 48/20 48/15 OMOKO GUNSO 320 330 340 350 360 370 380 390 400
Z 24 Jan 0100 UTC 24 Jan 0800 UTC SOORY 42/50 46/40 50/30 52/20 LIMRI XETBO 320 340 360 380 400
Warning: Do not use this data for real-world aviation or navigation. No guarantee of current accuracy is given.