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This article is about the year 78. For the number, see 78 (number). For other uses, see 78 (disambiguation).
Millennium: 1st millennium
Centuries: 1st century BC1st century2nd century
Decades: 40s  50s  60s  – 70s –  80s  90s  100s
Years: 75 76 777879 80 81
78 by topic
State leadersSovereign states
Birth and death categories
Establishment and disestablishment categories
78 in other calendars
Gregorian calendar 78
Ab urbe condita 831
Assyrian calendar 4828
Bengali calendar −515
Berber calendar 1028
Buddhist calendar 622
Burmese calendar −560
Byzantine calendar 5586–5587
Chinese calendar 丁丑(Fire Ox)
2774 or 2714
    — to —
戊寅年 (Earth Tiger)
2775 or 2715
Coptic calendar −206 – −205
Discordian calendar 1244
Ethiopian calendar 70–71
Hebrew calendar 3838–3839
Hindu calendars
 - Vikram Samvat 134–135
 - Shaka Samvat −1 – 0
 - Kali Yuga 3178–3179
Holocene calendar 10078
Iranian calendar 544 BP – 543 BP
Islamic calendar 561 BH – 560 BH
Javanese calendar N/A
Julian calendar 78
Korean calendar 2411
Minguo calendar 1834 before ROC
Nanakshahi calendar −1390
Seleucid era 389/390 AG
Thai solar calendar 620–621

Year 78 (LXXVIII) was a common year starting on Thursday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Novius and Commodus (or, less frequently, year 831 Ab urbe condita). The denomination 78 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.


By place[edit]

Roman Empire[edit]


By topic[edit]


  • The philosopher Wang Chong (Wang-Tchoung) claims all phenomena have material causes.


  • Zhang Heng, Chinese mathematician, astronomer, inventor, poet, artist, scholar, geographer, and statesman (d. 139)
  • Liu Qing, Chinese prince of the Han Dynasty (d. 106)