684 Nî: Nî

chhian-liân-kí:	1 chhian-liân-kí
sè-kí:	6 sè-kí \| 7 sè-kí \| 8 sè-kí
cha̍p-nî-kí:	650 nî-tāi \| 660 nî-tāi \| 670 nî-tāi \| 680 nî-tāi \| 690 nî-tāi \| 700 nî-tāi \| 710 nî-tāi
nî:	679 nî \| 680 nî \| 681 nî \| 682 nî \| 683 nî \| 684 nî \| 685 nî \| 686 nî \| 687 nî \| 688 nî \| 689 nî

**684 nî tī kî-thaⁿ le̍k-hoat**
Kan-chi	Kùi-bī nî — kàu — Kap-sin nî
Gregorius le̍k	684 nî DCLXXXIV
Julius le̍k	pí Gregorius le̍k chá 3 kang
Hu̍t-le̍k	1228 nî
Tō-kàu-le̍k	3381 nî
Hoê-le̍k	64~65
Hông-kì	1344 nî
Tân-kì	3017 nî
Hi-pek-lâi-le̍k	4444~4445
Hindu le̍k
- Vikram Samvat	739 – 740
- Shaka Samvat	606 – 607
Iran le̍k	62 – 63
Runic le̍k	934
Assyria le̍k	5434 nî
Ethiopia le̍k	678~679

684 nî tī Julius Le̍k-hoat lāi-bīn sī chi̍t ê lūn-nî, thâu kang sī pài-gō͘.

Liân-hō

Tông: Sū-sèng (嗣聖) goân nî; Bûn-bêng (文明) goân nî; Kong-the̍k (光宅) goân nî

Tang A-chiu kun-chú kì-goân

Tông: Tiong-chong (中宗) goân nî; Joē-chong (睿宗) goân nî
Sin-lô: Sîn-bûn-ông (神文王) 4 nî

Sū-kiāⁿ

Kok-ka léng-tō-chiá

Chhut-sì

Kòe-sin

Chham-khó chu-liāu

Tī Wiki Commons téng ê siong-koan tóng-àn: 684 nî

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