Add &accept-language=en to the API request URL.
By default Nominatim returns the value of the name
tag, e.g. for https://www.openstreetmap.org/relation/5337946 that is මාතර දිස්ත්රික්කය. If you set &accept-language=en then Nominatim first looks at the name:en
tag.
https://nominatim.openstreetmap.org/reverse.php?format=json&lat=5.973857676873632&lon=80.54088463153965
"address": { "suburb": "Welegoda", "state_district": "මාතර දිස්ත්රික්කය", "state": "දකුණු පළාත", "postcode": "81050", "country": "ශ්රී ලංකාව இலங்கை", "country_code": "lk" },
https://nominatim.openstreetmap.org/reverse.php?format=json&lat=5.973857676873632&lon=80.54088463153965&accept-language=en
"address": { "suburb": "Welegoda", "state_district": "Matara District", "state": "Southern Province", "postcode": "81050", "country": "Sri Lanka", "country_code": "lk" },
answered 10 Jun '19, 11:58

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