1820
Il ha 2 modificationes in iste version que attende revision.
Le version stabile ha essite revidite le 8 martio 2013.
| 1820 |
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| instantia de: anno civil[*], anno bissextil, leap year starting on Saturday and ending on Sunday[*] |
| parte de: 1820s[*], Calendario gregorian |
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| precedite per: 1819 , succedite per: 1821 |
| Commons: 1820 |