Not to be confused with 
Thermador  (a commercial brand).
Thermidor  (French pronunciation:  [tɛʁmidɔʁ] ) was the eleventh month  in the French Republican calendar . The month was named after the French  word thermal , derived from the Greek  word thermos  'heat'. 
Thermidor was the second month of the summer quarter (mois d'été ). It started July 19 or 20. It ended August 17 or 18. It follows Messidor  and precedes Fructidor . During Year 2, it was sometimes called Fervidor . 
Because of the Thermidorian Reaction —9 Thermidor Year II—the overthrow of revolutionary radical Maximilien Robespierre  and his followers in that month, the word "Thermidor" has come to mean a retreat from more radical goals and strategies during a revolution, especially when caused by a replacement of leading personalities.   
    Year: 3   Month:    Year: III        Day of the 10-day    Primidi     Duodi     Tridi     Quartidi     Quintidi     Sextidi     Septidi     Octidi     Nonidi     Décadi   
      décade 31     1   Sunday19  July 1795      2   Monday20  July 1795      3   Tuesday21  July 1795      4   Wednesday22  July 1795      5   Thursday23  July 1795      6   Friday24  July 1795      7   Saturday25  July 1795      8   Sunday26  July 1795      9   Monday27  July 1795      10   Tuesday28  July 1795    
      décade 32     11   Wednesday29  July 1795      12   Thursday30  July 1795      13   Friday31  July 1795      14   Saturday1  August 1795      15   Sunday2  August 1795      16   Monday3  August 1795      17   Tuesday4  August 1795      18   Wednesday5  August 1795      19   Thursday6  August 1795      20   Friday7  August 1795    
      décade 33     21   Saturday8  August 1795      22   Sunday9  August 1795      23   Monday10  August 1795      24   Tuesday11  August 1795      25   Wednesday12  August 1795      26   Thursday13  August 1795      27   Friday14  August 1795      28   Saturday15  August 1795      29   Sunday16  August 1795      30   Monday17  August 1795    
      Decimal time  – 10 h/day    Paris     8h36m51s     Thermidor     19:55:14     Time of day - 24 h/day     Greenwich   
   
 
   Conversion between Republican and Gregorian calendar for the years I - XIV         Year: 1   Month:    Year: I        Day of the 10-day    Primidi     Duodi     Tridi     Quartidi     Quintidi     Sextidi     Septidi     Octidi     Nonidi     Décadi   
      décade 31     1   Friday19  July 1793      2   Saturday20  July 1793      3   Sunday21  July 1793      4   Monday22  July 1793      5   Tuesday23  July 1793      6   Wednesday24  July 1793      7   Thursday25  July 1793      8   Friday26  July 1793      9   Saturday27  July 1793      10   Sunday28  July 1793    
      décade 32     11   Monday29  July 1793      12   Tuesday30  July 1793      13   Wednesday31  July 1793      14   Thursday1  August 1793      15   Friday2  August 1793      16   Saturday3  August 1793      17   Sunday4  August 1793      18   Monday5  August 1793      19   Tuesday6  August 1793      20   Wednesday7  August 1793    
      décade 33     21   Thursday8  August 1793      22   Friday9  August 1793      23   Saturday10  August 1793      24   Sunday11  August 1793      25   Monday12  August 1793      26   Tuesday13  August 1793      27   Wednesday14  August 1793      28   Thursday15  August 1793      29   Friday16  August 1793      30   Saturday17  August 1793    
      Decimal time  – 10 h/day    Paris     8:30:02     Thermidor     19:55:14     Time of day - 24 h/day     Greenwich   
   
    Year: 2   Month:    Year: II        Day of the 10-day    Primidi     Duodi     Tridi     Quartidi     Quintidi     Sextidi     Septidi     Octidi     Nonidi     Décadi   
      décade 31     1   Saturday19  July 1794      2   Sunday20  July 1794      3   Monday21  July 1794      4   Tuesday22  July 1794      5   Wednesday23  July 1794      6   Thursday24  July 1794      7   Friday25  July 1794      8   Saturday26  July 1794      9   Sunday27  July 1794      10   Monday28  July 1794    
      décade 32     11   Tuesday29  July 1794      12   Wednesday30  July 1794      13   Thursday31  July 1794      14   Friday1  August 1794      15   Saturday2  August 1794      16   Sunday3  August 1794      17   Monday4  August 1794      18   Tuesday5  August 1794      19   Wednesday6  August 1794      20   Thursday7  August 1794    
      décade 33     21   Friday8  August 1794      22   Saturday9  August 1794      23   Sunday10  August 1794      24   Monday11  August 1794      25   Tuesday12  August 1794      26   Wednesday13  August 1794      27   Thursday14  August 1794      28   Friday15  August 1794      29   Saturday16  August 1794      30   Sunday17  August 1794    
      Decimal time  – 10 h/day    Paris     8:30:02     Thermidor     19:55:14     Time of day - 24 h/day     Greenwich   
   
    Year: 3   Month:    Year: III        Day of the 10-day    Primidi     Duodi     Tridi     Quartidi     Quintidi     Sextidi     Septidi     Octidi     Nonidi     Décadi   
      décade 31     1   Sunday19  July 1795      2   Monday20  July 1795      3   Tuesday21  July 1795      4   Wednesday22  July 1795      5   Thursday23  July 1795      6   Friday24  July 1795      7   Saturday25  July 1795      8   Sunday26  July 1795      9   Monday27  July 1795      10   Tuesday28  July 1795    
      décade 32     11   Wednesday29  July 1795      12   Thursday30  July 1795      13   Friday31  July 1795      14   Saturday1  August 1795      15   Sunday2  August 1795      16   Monday3  August 1795      17   Tuesday4  August 1795      18   Wednesday5  August 1795      19   Thursday6  August 1795      20   Friday7  August 1795    
      décade 33     21   Saturday8  August 1795      22   Sunday9  August 1795      23   Monday10  August 1795      24   Tuesday11  August 1795      25   Wednesday12  August 1795      26   Thursday13  August 1795      27   Friday14  August 1795      28   Saturday15  August 1795      29   Sunday16  August 1795      30   Monday17  August 1795    
      Decimal time  – 10 h/day    Paris     8:30:02     Thermidor     19:55:14     Time of day - 24 h/day     Greenwich   
   
    Year: 4   Month:    Year: IV        Day of the 10-day    Primidi     Duodi     Tridi     Quartidi     Quintidi     Sextidi     Septidi     Octidi     Nonidi     Décadi   
      décade 31     1   Tuesday19  July 1796      2   Wednesday20  July 1796      3   Thursday21  July 1796      4   Friday22  July 1796      5   Saturday23  July 1796      6   Sunday24  July 1796      7   Monday25  July 1796      8   Tuesday26  July 1796      9   Wednesday27  July 1796      10   Thursday28  July 1796    
      décade 32     11   Friday29  July 1796      12   Saturday30  July 1796      13   Sunday31  July 1796      14   Monday1  August 1796      15   Tuesday2  August 1796      16   Wednesday3  August 1796      17   Thursday4  August 1796      18   Friday5  August 1796      19   Saturday6  August 1796      20   Sunday7  August 1796    
      décade 33     21   Monday8  August 1796      22   Tuesday9  August 1796      23   Wednesday10  August 1796      24   Thursday11  August 1796      25   Friday12  August 1796      26   Saturday13  August 1796      27   Sunday14  August 1796      28   Monday15  August 1796      29   Tuesday16  August 1796      30   Wednesday17  August 1796    
      Decimal time  – 10 h/day    Paris     8:30:02     Thermidor     19:55:14     Time of day - 24 h/day     Greenwich   
   
    Year: 5   Month:    Year: V        Day of the 10-day    Primidi     Duodi     Tridi     Quartidi     Quintidi     Sextidi     Septidi     Octidi     Nonidi     Décadi   
      décade 31     1   Wednesday19  July 1797      2   Thursday20  July 1797      3   Friday21  July 1797      4   Saturday22  July 1797      5   Sunday23  July 1797      6   Monday24  July 1797      7   Tuesday25  July 1797      8   Wednesday26  July 1797      9   Thursday27  July 1797      10   Friday28  July 1797    
      décade 32     11   Saturday29  July 1797      12   Sunday30  July 1797      13   Monday31  July 1797      14   Tuesday1  August 1797      15   Wednesday2  August 1797      16   Thursday3  August 1797      17   Friday4  August 1797      18   Saturday5  August 1797      19   Sunday6  August 1797      20   Monday7  August 1797    
      décade 33     21   Tuesday8  August 1797      22   Wednesday9  August 1797      23   Thursday10  August 1797      24   Friday11  August 1797      25   Saturday12  August 1797      26   Sunday13  August 1797      27   Monday14  August 1797      28   Tuesday15  August 1797      29   Wednesday16  August 1797      30   Thursday17  August 1797    
      Decimal time  – 10 h/day    Paris     8:30:02     Thermidor     19:55:14     Time of day - 24 h/day     Greenwich   
   
    Year: 6   Month:    Year: VI        Day of the 10-day    Primidi     Duodi     Tridi     Quartidi     Quintidi     Sextidi     Septidi     Octidi     Nonidi     Décadi   
      décade 31     1   Thursday19  July 1798      2   Friday20  July 1798      3   Saturday21  July 1798      4   Sunday22  July 1798      5   Monday23  July 1798      6   Tuesday24  July 1798      7   Wednesday25  July 1798      8   Thursday26  July 1798      9   Friday27  July 1798      10   Saturday28  July 1798    
      décade 32     11   Sunday29  July 1798      12   Monday30  July 1798      13   Tuesday31  July 1798      14   Wednesday1  August 1798      15   Thursday2  August 1798      16   Friday3  August 1798      17   Saturday4  August 1798      18   Sunday5  August 1798      19   Monday6  August 1798      20   Tuesday7  August 1798    
      décade 33     21   Wednesday8  August 1798      22   Thursday9  August 1798      23   Friday10  August 1798      24   Saturday11  August 1798      25   Sunday12  August 1798      26   Monday13  August 1798      27   Tuesday14  August 1798      28   Wednesday15  August 1798      29   Thursday16  August 1798      30   Friday17  August 1798    
      Decimal time  – 10 h/day    Paris     8:30:02     Thermidor     19:55:14     Time of day - 24 h/day     Greenwich   
   
    Year: 7   Month:    Year: VII        Day of the 10-day    Primidi     Duodi     Tridi     Quartidi     Quintidi     Sextidi     Septidi     Octidi     Nonidi     Décadi   
      décade 31     1   Friday19  July 1799      2   Saturday20  July 1799      3   Sunday21  July 1799      4   Monday22  July 1799      5   Tuesday23  July 1799      6   Wednesday24  July 1799      7   Thursday25  July 1799      8   Friday26  July 1799      9   Saturday27  July 1799      10   Sunday28  July 1799    
      décade 32     11   Monday29  July 1799      12   Tuesday30  July 1799      13   Wednesday31  July 1799      14   Thursday1  August 1799      15   Friday2  August 1799      16   Saturday3  August 1799      17   Sunday4  August 1799      18   Monday5  August 1799      19   Tuesday6  August 1799      20   Wednesday7  August 1799    
      décade 33     21   Thursday8  August 1799      22   Friday9  August 1799      23   Saturday10  August 1799      24   Sunday11  August 1799      25   Monday12  August 1799      26   Tuesday13  August 1799      27   Wednesday14  August 1799      28   Thursday15  August 1799      29   Friday16  August 1799      30   Saturday17  August 1799    
      Decimal time  – 10 h/day    Paris     8:30:02     Thermidor     19:55:14     Time of day - 24 h/day     Greenwich   
   
    Year: 8   Month:    Year: VIII        Day of the 10-day    Primidi     Duodi     Tridi     Quartidi     Quintidi     Sextidi     Septidi     Octidi     Nonidi     Décadi   
      décade 31     1   Sunday20  July 1800      2   Monday21  July 1800      3   Tuesday22  July 1800      4   Wednesday23  July 1800      5   Thursday24  July 1800      6   Friday25  July 1800      7   Saturday26  July 1800      8   Sunday27  July 1800      9   Monday28  July 1800      10   Tuesday29  July 1800    
      décade 32     11   Wednesday30  July 1800      12   Thursday31  July 1800      13   Friday1  August 1800      14   Saturday2  August 1800      15   Sunday3  August 1800      16   Monday4  August 1800      17   Tuesday5  August 1800      18   Wednesday6  August 1800      19   Thursday7  August 1800      20   Friday8  August 1800    
      décade 33     21   Saturday9  August 1800      22   Sunday10  August 1800      23   Monday11  August 1800      24   Tuesday12  August 1800      25   Wednesday13  August 1800      26   Thursday14  August 1800      27   Friday15  August 1800      28   Saturday16  August 1800      29   Sunday17  August 1800      30   Monday18  August 1800    
      Decimal time  – 10 h/day    Paris     8:30:02     Thermidor     19:55:14     Time of day - 24 h/day     Greenwich   
   
    Year: 9   Month:    Year: IX        Day of the 10-day    Primidi     Duodi     Tridi     Quartidi     Quintidi     Sextidi     Septidi     Octidi     Nonidi     Décadi   
      décade 31     1   Monday20  July 1801      2   Tuesday21  July 1801      3   Wednesday22  July 1801      4   Thursday23  July 1801      5   Friday24  July 1801      6   Saturday25  July 1801      7   Sunday26  July 1801      8   Monday27  July 1801      9   Tuesday28  July 1801      10   Wednesday29  July 1801    
      décade 32     11   Thursday30  July 1801      12   Friday31  July 1801      13   Saturday1  August 1801      14   Sunday2  August 1801      15   Monday3  August 1801      16   Tuesday4  August 1801      17   Wednesday5  August 1801      18   Thursday6  August 1801      19   Friday7  August 1801      20   Saturday8  August 1801    
      décade 33     21   Sunday9  August 1801      22   Monday10  August 1801      23   Tuesday11  August 1801      24   Wednesday12  August 1801      25   Thursday13  August 1801      26   Friday14  August 1801      27   Saturday15  August 1801      28   Sunday16  August 1801      29   Monday17  August 1801      30   Tuesday18  August 1801    
      Decimal time  – 10 h/day    Paris     8:30:02     Thermidor     19:55:14     Time of day - 24 h/day     Greenwich   
   
    Year: 10   Month:    Year: X        Day of the 10-day    Primidi     Duodi     Tridi     Quartidi     Quintidi     Sextidi     Septidi     Octidi     Nonidi     Décadi   
      décade 31     1   Tuesday20  July 1802      2   Wednesday21  July 1802      3   Thursday22  July 1802      4   Friday23  July 1802      5   Saturday24  July 1802      6   Sunday25  July 1802      7   Monday26  July 1802      8   Tuesday27  July 1802      9   Wednesday28  July 1802      10   Thursday29  July 1802    
      décade 32     11   Friday30  July 1802      12   Saturday31  July 1802      13   Sunday1  August 1802      14   Monday2  August 1802      15   Tuesday3  August 1802      16   Wednesday4  August 1802      17   Thursday5  August 1802      18   Friday6  August 1802      19   Saturday7  August 1802      20   Sunday8  August 1802    
      décade 33     21   Monday9  August 1802      22   Tuesday10  August 1802      23   Wednesday11  August 1802      24   Thursday12  August 1802      25   Friday13  August 1802      26   Saturday14  August 1802      27   Sunday15  August 1802      28   Monday16  August 1802      29   Tuesday17  August 1802      30   Wednesday18  August 1802    
      Decimal time  – 10 h/day    Paris     8:30:02     Thermidor     19:55:14     Time of day - 24 h/day     Greenwich   
   
    Year: 11   Month:    Year: XI        Day of the 10-day    Primidi     Duodi     Tridi     Quartidi     Quintidi     Sextidi     Septidi     Octidi     Nonidi     Décadi   
      décade 31     1   Wednesday20  July 1803      2   Thursday21  July 1803      3   Friday22  July 1803      4   Saturday23  July 1803      5   Sunday24  July 1803      6   Monday25  July 1803      7   Tuesday26  July 1803      8   Wednesday27  July 1803      9   Thursday28  July 1803      10   Friday29  July 1803    
      décade 32     11   Saturday30  July 1803      12   Sunday31  July 1803      13   Monday1  August 1803      14   Tuesday2  August 1803      15   Wednesday3  August 1803      16   Thursday4  August 1803      17   Friday5  August 1803      18   Saturday6  August 1803      19   Sunday7  August 1803      20   Monday8  August 1803    
      décade 33     21   Tuesday9  August 1803      22   Wednesday10  August 1803      23   Thursday11  August 1803      24   Friday12  August 1803      25   Saturday13  August 1803      26   Sunday14  August 1803      27   Monday15  August 1803      28   Tuesday16  August 1803      29   Wednesday17  August 1803      30   Thursday18  August 1803    
      Decimal time  – 10 h/day    Paris     8:30:02     Thermidor     19:55:14     Time of day - 24 h/day     Greenwich   
   
    Year: 12   Month:    Year: XII        Day of the 10-day    Primidi     Duodi     Tridi     Quartidi     Quintidi     Sextidi     Septidi     Octidi     Nonidi     Décadi   
      décade 31     1   Friday20  July 1804      2   Saturday21  July 1804      3   Sunday22  July 1804      4   Monday23  July 1804      5   Tuesday24  July 1804      6   Wednesday25  July 1804      7   Thursday26  July 1804      8   Friday27  July 1804      9   Saturday28  July 1804      10   Sunday29  July 1804    
      décade 32     11   Monday30  July 1804      12   Tuesday31  July 1804      13   Wednesday1  August 1804      14   Thursday2  August 1804      15   Friday3  August 1804      16   Saturday4  August 1804      17   Sunday5  August 1804      18   Monday6  August 1804      19   Tuesday7  August 1804      20   Wednesday8  August 1804    
      décade 33     21   Thursday9  August 1804      22   Friday10  August 1804      23   Saturday11  August 1804      24   Sunday12  August 1804      25   Monday13  August 1804      26   Tuesday14  August 1804      27   Wednesday15  August 1804      28   Thursday16  August 1804      29   Friday17  August 1804      30   Saturday18  August 1804    
      Decimal time  – 10 h/day    Paris     8:30:02     Thermidor     19:55:14     Time of day - 24 h/day     Greenwich   
   
    Year: 13   Month:    Year: XIII        Day of the 10-day    Primidi     Duodi     Tridi     Quartidi     Quintidi     Sextidi     Septidi     Octidi     Nonidi     Décadi   
      décade 31     1   Saturday20  July 1805      2   Sunday21  July 1805      3   Monday22  July 1805      4   Tuesday23  July 1805      5   Wednesday24  July 1805      6   Thursday25  July 1805      7   Friday26  July 1805      8   Saturday27  July 1805      9   Sunday28  July 1805      10   Monday29  July 1805    
      décade 32     11   Tuesday30  July 1805      12   Wednesday31  July 1805      13   Thursday1  August 1805      14   Friday2  August 1805      15   Saturday3  August 1805      16   Sunday4  August 1805      17   Monday5  August 1805      18   Tuesday6  August 1805      19   Wednesday7  August 1805      20   Thursday8  August 1805    
      décade 33     21   Friday9  August 1805      22   Saturday10  August 1805      23   Sunday11  August 1805      24   Monday12  August 1805      25   Tuesday13  August 1805      26   Wednesday14  August 1805      27   Thursday15  August 1805      28   Friday16  August 1805      29   Saturday17  August 1805      30   Sunday18  August 1805    
      Decimal time  – 10 h/day    Paris     8:30:02     Thermidor     19:55:14     Time of day - 24 h/day     Greenwich   
   
    Year: 14   Month:    Year: XIV        Day of the 10-day    Primidi     Duodi     Tridi     Quartidi     Quintidi     Sextidi     Septidi     Octidi     Nonidi     Décadi   
      décade 31     1   Sunday20  July 1806      2   Monday21  July 1806      3   Tuesday22  July 1806      4   Wednesday23  July 1806      5   Thursday24  July 1806      6   Friday25  July 1806      7   Saturday26  July 1806      8   Sunday27  July 1806      9   Monday28  July 1806      10   Tuesday29  July 1806    
      décade 32     11   Wednesday30  July 1806      12   Thursday31  July 1806      13   Friday1  August 1806      14   Saturday2  August 1806      15   Sunday3  August 1806      16   Monday4  August 1806      17   Tuesday5  August 1806      18   Wednesday6  August 1806      19   Thursday7  August 1806      20   Friday8  August 1806    
      décade 33     21   Saturday9  August 1806      22   Sunday10  August 1806      23   Monday11  August 1806      24   Tuesday12  August 1806      25   Wednesday13  August 1806      26   Thursday14  August 1806      27   Friday15  August 1806      28   Saturday16  August 1806      29   Sunday17  August 1806      30   Monday18  August 1806    
      Decimal time  – 10 h/day    Paris     8:30:02     Thermidor     19:55:14     Time of day - 24 h/day     Greenwich   
   
   
 
Day name table  Like all French Republican Calendar months, Thermidor lasted 30 days and was divided into three 10-day weeks called décades  (decades). Every day had the name of an agricultural plant, except the 5th (Quintidi) and 10th day (Decadi) of every decade, which had the name of a domestic animal or an agricultural tool, respectively. 
  
Conversion table     Table for conversion between Republican and Gregorian Calendar            I.   II.   III.   IV.   V.   VI.   VII.   
     1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19  20  21  22  23  24  25  26  27  28  29  30     19  20  21  22  23  24  25  26  27  28  29  30  31  1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17        July   1793   1794   1795   1796   1797   1798   1799   August   
   
            VIII.   IX.   X.   XI.   XII.   XIII.   
     1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19  20  21  22  23  24  25  26  27  28  29  30     20  21  22  23  24  25  26  27  28  29  30  31  1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18         July   1800   1801   1802   1803   1804   1805   August   
   
   
 
Thermidor in revolution  The Thermidorian Reaction , Revolution of Thermidor , or simply Thermidor  refers to the coup of 9 Thermidor (27 July 1794) in which the Committee of Public Safety led by Maximilien Robespierre  was sidelined and its leaders arrested and guillotined , resulting in the end of the Reign of Terror . The new regime, known as The Directory , introduced more conservative policies aimed at stabilizing the revolutionary government. 
Consequently, for historians of revolutionary movements, the term Thermidor  has come to mean the phase in some revolutions when the political pendulum swings back towards something resembling a pre-revolutionary state, and power slips from the hands of the original revolutionary leadership. Leon Trotsky , in his book The Revolution Betrayed Joseph Stalin  and the accompanying post-revolutionary bureaucracy as the "Soviet Thermidor". 
 
Thermidor in culture  The food Lobster Thermidor  was named, directly or indirectly, after the month. Sometimes it is said that it was first prepared for Napoleon I  during the month of Thermidor. Others say that it was created by Tony Girod at the Café de Paris , to celebrate the opening of a play called Thermidor 
Thermidor is the name of a story revolving around the end of the French Revolution in Neil Gaiman 's The Sandman 
There is a song recorded by J-pop artist Nana Mizuki  by the name of "Thermidor". Its lyrics talk about a person in love that is also rethinking their personal feelings after realizing that the person they love has changed, and so has the person. Its lyrics mimic the modern definition of Thermidor. 
 
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