1821 nieng

Chi?ng-g? :	2 chi?ng-g?
Sie-g? :	18 sie-g? \| 19 sie-g? \| 20 sie-g?
Nieng-dai :	1790 nieng-dai \| 1800 nieng-dai \| 1810 nieng-dai \| 1820 nieng-dai \| 1830 nieng-dai \| 1840 nieng-dai \| 1850 nieng-dai
Nieng :	1816 nieng \| 1817 nieng \| 1818 nieng \| 1819 nieng \| 1820 nieng \| 1821 nieng \| 1822 nieng \| 1823 nieng \| 1824 nieng \| 1825 nieng \| 1826 nieng

**1821 nieng g?k gi-t? l?k-huak**
G?ng-ci?	G?ng-sing nieng ? gau ? S?ng-se?? nieng
Gregorius l?k	1821 nieng MDCCCXXI
Julius l?k	b? Gregorius l?k c? 12 g??ng
H?k-l?k	2365 nieng
Do?-gau-l?k	4518 nieng
Huoi-l?k	1236~1238
N?k-bu?ng Huong-g?	2481 nieng
Tang-g?	4154 nieng
H?-baik-lai-l?k	5581~5582
S??-caung-l?k	iong tiek l??ng (lcags pho 'brug) ? gau ? ?ng tiek sie (lcags mo sbrul)
Hindu l?k
- Vikram Samvat	1876 – 1877
- Shaka Samvat	1743 – 1744
Iran l?k	1199 – 1200
Runic l?k	2071
Assyria l?k	6571 nieng
Ethiopia l?k	1815~1816

1821 nieng g?k Gregorius L?k-huak di?-sie se si?h ciah bing-nieng , tau g??ng se bai-ek ; g?k Julius L?k-huak di?-sie se si?h ciah bing-nieng , tau g??ng se bai-l??k . Ci? nieng g?k Gregorius L?k-huak di?-sie b? Julius L?k-huak c? 12 g??ng. Buo-hong guok-g? g?k 1923 nieng ?-seng go l?? s?i Julius L?k-huak.

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