# Supported Datums

Some formats in GPSBabel support multiple datums. For example, the `datum` option to the garmin_txt format allows you to specify a datum for the output file.

The following is a list of the datums supported by GPSBabel.

- Adindan
- AFG
- Ain-El-Abd
- Alaska-NAD27
- Alaska-Canada
- Anna-1-Astro
- ARC 1950 Mean
- ARC 1960 Mean
- Asc Island 58
- Astro B4
- Astro Beacon E
- Astro pos 71/4
- Astro stn 52
- Australia Geo 1984
- Bahamas NAD27
- Bellevue IGN
- Bermuda 1957
- Bukit Rimpah
- Camp_Area_Astro
- Campo_Inchauspe
- Canada_Mean(NAD27)
- Canal_Zone_(NAD27)
- Canton_Island_1966
- Cape
- Cape_Canaveral_mean
- Carribean NAD27
- Carthage
- Cent America NAD27
- Chatham 1971
- Chua Astro
- Corrego Alegre
- Cuba NAD27
- Cyprus
- Djakarta(Batavia)
- DOS 1968
- Easter lsland 1967
- Egypt
- European 1950
- European 1950 mean
- European 1979 mean
- Finnish Nautical
- Gandajika Base
- Geodetic Datum 49
- Ghana
- Greenland NAD27
- Guam 1963
- Gunung Segara
- Gunung Serindung 1962
- GUX1 Astro
- Herat North
- Hjorsey 1955
- Hong Kong 1963
- Hu-Tzu-Shan
- Indian
- Iran
- Ireland 1965
- ISTS 073 Astro 69
- Johnston Island 61
- Kandawala
- Kerguelen Island
- Kertau 48
- L.C. 5 Astro
- La Reunion
- Liberia 1964
- Luzon
- Mahe 1971
- Marco Astro
- Masirah Is. Nahrwan
- Massawa
- Merchich
- Mexico NAD27
- Midway Astro 61
- Mindanao
- Minna
- Montjong Lowe
- Nahrwan
- Naparima BWI
- North America 83
- N. America 1927 mean
- Observatorio 1966
- Old Egyptian
- Old Hawaiian_mean
- Old Hawaiian Kauai
- Old Hawaiian Maui
- Old Hawaiian Oahu
- Oman
- OSGB36
- Pico De Las Nieves
- Pitcairn Astro 67
- S. Am. 1956 mean(P)
- S. Chilean 1963 (P)
- Puerto Rico
- Pulkovo 1942
- Qornoq
- Quatar National
- Rome 1940
- S-42(Pulkovo1942)
- S.E.Asia_(Indian)
- SAD-69/Brazil
- Santa Braz
- Santo (DOS)
- Sapper Hill 43
- Schwarzeck
- Sicily
- Sierra Leone 1960
- S. Am. 1969 mean
- South Asia
- Southeast Base
- Southwest Base
- Tananarive Obs 25
- Thai/Viet (Indian)
- Timbalai 1948
- Tokyo mean
- Tristan Astro 1968
- United Arab Emirates
- Viti Levu 1916
- Wake Eniwetok 60
- WGS 72
- WGS 84
- Yacare
- Zanderij
- Sweden