January – Institute of Atmospheric Physics CAS

01/01/1964 Institute of Atmospheric Physics of the Czechoslovak Academy of Sciences was founded

14/01/1920 State Meteorological Institute, the predecessor of the Czech Hydrometeorological Institute, was founded

19/01/2007 Wind gust of 57.8 m/s recorded at Labská bouda in Krkonoše Mts.

21/01/2004 Ionospheric Digisonde DPS4 measurements succesfully started in Průhonice

23/01/1890 Czech Academy of Sciences and Arts, the predecessor of the Czech Academy of Sciences, was founded

29/01/1888 * Sydney Chapman, author of the ionospheric layers formation theory (+ 16 June 1970)