684

Millennium: 1st millennium
Centuries:
Decades:
Years:
684 in various calendars
Gregorian calendar684
DCLXXXIV
Ab urbe condita1437
Armenian calendar133
ԹՎ ՃԼԳ
Assyrian calendar5434
Balinese saka calendar605–606
Bengali calendar91
Berber calendar1634
Buddhist calendar1228
Burmese calendar46
Byzantine calendar6192–6193
Chinese calendar癸未年 (Water Goat)
3381 or 3174
    — to —
甲申年 (Wood Monkey)
3382 or 3175
Coptic calendar400–401
Discordian calendar1850
Ethiopian calendar676–677
Hebrew calendar4444–4445
Hindu calendars
 - Vikram Samvat740–741
 - Shaka Samvat605–606
 - Kali Yuga3784–3785
Holocene calendar10684
Iranian calendar62–63
Islamic calendar64–65
Japanese calendarHakuchi 35
(白雉35年)
Javanese calendar576–577
Julian calendar684
DCLXXXIV
Korean calendar3017
Minguo calendar1228 before ROC
民前1228年
Nanakshahi calendar−784
Seleucid era995/996 AG
Thai solar calendar1226–1227
Tibetan calendar阴水羊年
(female Water-Goat)
810 or 429 or −343
    — to —
阳木猴年
(male Wood-Monkey)
811 or 430 or −342
Pope Benedict II (684–685)

Year 684 (DCLXXXIV) was a leap year starting on Friday (link will display the full calendar) of the Julian calendar. The denomination 684 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.