Hi, for me the "gold standard" for image alignment in OSM are gpx traces with high quality. If no traces are available - which likely applies to most of Nepal - Bing is the standard to use. In either case adjust any other imagery to match the alignment of the standard.
But now the limitation: Some of the imagery currently in use with HOT shows some difference compared to Bing. But this is not a simple shift. To my limited understanding this comes from the correction applied to the image. Especially in mountains this is difficult - which likely is especially true for the Himalayas. But keep the distances in mind: With high resolution images a shift of let's say 10 m is pretty visible - but should not really matter too much in real live. In any case: Try to align any of your work with Bing. Leave any misaligned data for now. Michael (user Ohr)
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