EPSG:4227 — Deir ez Zor
Deir ez Zor (EPSG:4227) — a Geographic (degrees) system on the clrk80ign datum, used in Syria, Lebanon. Parameters, proj4, WKT, accuracy ±0.1 m, plus a free converter to…
At a glance
- EPSG
- 4227
- Name
- Deir ez Zor
- Kind
- Geographic (degrees)
- Family
- Geographic (longitude/latitude)
- Ellipsoid
- clrk80ign
- Accuracy
- ±0.1 m (vs PROJ)
- Countries
- Syria، Lebanon
Area of use
| West | 35.04° |
| South | 32.31° |
| East | 42.38° |
| North | 37.30° |
Projection parameters
| Projection | longlat |
| Ellipsoid | clrk80ign |
| Helmert shift to WGS84 | -190.421,8.532,238.69,0,0,0,0 |
+proj=longlat +ellps=clrk80ign +no_defs +towgs84=-190.421,8.532,238.69,0,0,0,0
GEOGCS["GCS_Deir ez Zor",DATUM["D_Clarke_1880_IGN",SPHEROID["Clarke_1880_IGN",6378249.2,293.4660212936269],TOWGS84[-190.421,8.532,238.69,0,0,0,0]],PRIMEM["Greenwich",0],UNIT["Degree",0.0174532925199433],AUTHORITY["EPSG","4227"]]
Sample conversion
Syria capital: WGS84 36.27650, 33.51380 → EPSG:4227 36.2752133, 33.5141642
Values are within ±0.1 m at the test point.
About the Geographic (longitude/latitude) family
Deir ez Zor is a geographic coordinate system: positions are longitude and latitude in degrees on its reference ellipsoid, not metres on a plane. It is the datum layer that projected grids (UTM, national belts) are built upon.
Because it is unprojected, distances and areas cannot be measured directly from its degrees — convert to a metric projected system (or use a geodesic calculation) first. This page's converter does exactly that.
Related systems
- EPSG:22770 — Deir ez Zor / Syria Lambert
- EPSG:32636 — WGS 84 / UTM zone 36N
- EPSG:32637 — WGS 84 / UTM zone 37N
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