Jan Woltjer

Dutch astronomer (1891-1946) · Netherlands · On the map · Scientists · Died at 54

Jan Woltjer was a Dutch astronomer.

Jan Woltjer is read about 3 times a day, in 7 languages.

A typical day, 30 days to 23 June 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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Jan Woltjer

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Netherlands