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Heads of State · Nekrolog

Panorama of Buda and Oven for the siege in 1684
The first siege of Ofen by the Holy League
in the Great Turkish War has to be called off without result.
Gottfried Wilhelm Leibniz
Gottfried Wilhelm Leibniz publishes differential calculus for the first time .
Giovanni Domenico Cassini
Giovanni Domenico Cassini discovers two moons of Saturn .
1684 in other calendars
Armenian calendar 1132/33 (turn of the year July)
Ethiopian calendar 1676/77 (turn of the year 10/11 September)
Bengali solar calendar 1089/90 (beginning of April 14th or 15th)
Buddhist calendar 2227/28 (southern Buddhism); 2226/27 (alternative calculation according to Buddhas Parinirvana )
Chinese calendar 72./73. (73./74.) Cycle

Year of the Wood Rat甲子 ( at the beginning of the year Water Pig 癸亥)

Chula Sakarat (Siam, Myanmar) / Dai calendar (Vietnam) 1046/47 (turn of the year April)
Dangun era (Korea) 4017/18 (October 2-3)
Iranian calendar 1062/63
Islamic calendar 1095/96 (turn of the year December 7th / 8th)
Jewish calendar 5444/45 (September 8/9)
Coptic calendar 1400/01 (September 10-11)
Malayalam calendar 859/860
Seleucid era Babylon: 1994/95 (turn of the year April)

Syria: 1995/96 (turn of the year October)

Vikram Sambat (Nepalese Calendar) 1740/41 (turn of the year April)


Politics and world events

Great Turkish War

Reunion War

Adam Frans van der Meulen : Siege of Luxembourg



science and technology

  • March 21 : The astronomer Giovanni Domenico Cassini discovers two moons on the planet Saturn , Tethys and Dione .
  • In October Gottfried Wilhelm Leibniz 's Nova Methodus Pro Maximis & minimis, itemque tangentibus qua nec fractas nec irrationales quantitates moratur, & singulare pro illis calculigenus, by GGL (new method of maxima, minima and tangents that are neither broken nor broken comes across irrational quantities, and a peculiar type of calculation related to it) in the journal acta eruditorum and thus published the differential calculus for the first time .

nature and environment

The frozen Thames 1684


First half of the year

Catherine I.

Second half of the year

Exact date of birth unknown


First half of the year

Second half of the year

Elena Lucrezia Cornaro Piscopia
Pierre Corneille

Exact date of death unknown

Web links

Commons : 1684  - Collection of Images, Videos, and Audio Files