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Per Collinder

Swedish astronomer (1890-1975) · Sweden · On the map · Scientists

Per Collinder was a Swedish astronomer.

Per Collinder is read about 3 times a day, in 12 languages.

A typical day, 30 days to 21 September 2026

The middle day of the days counted, so one week of news cannot move it. The line under it is the last 60 days, one point a day.

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Per Collinder

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Sweden