Os países baixos

[Belgium 1942; Comoro Islands 1979; Netherlands 1929, 1947, 1962]

Reformar o calendário

[Germany 1982; Great Britain 1975, 1984; Italy 1945; Tonga 1984; Vatican 1982, 2012]

Galileo Galilei

[Ireland 2000; Italy 1942, 1964, 1983; Russia 1964]

Johannes Kepler

 [Czech Republic 2009; Germany 1971; Hungary 1980]

Tycho Brahe

[Ascension 1971; China 2011; Denmark 1946, 1973]

Copérnico

[East Germany 1973; Pakistan 1973; Venezuela 1973]

Quadrantes, sextantes e octantes

[Germany 1981; New Zealand 1997; Poland 1987; St Helena 1977; Turkey 1961]