240

240 in other calendars
Gregorian calendar	240; CCXL
Ab urbe condita	993
Assyrian calendar	4990
Balinese saka calendar	161–162
Bengali calendar	−353
Berber calendar	1190
Buddhist calendar	784
Burmese calendar	−398
Byzantine calendar	5748–5749
Chinese calendar	己未年 (Earth Goat); 2936 or 2876; — to —; 庚申年 (Metal Monkey); 2937 or 2877
Coptic calendar	−44 – −43
Discordian calendar	1406
Ethiopian calendar	232–233
Hebrew calendar	4000–4001
Hindu calendars
- Vikram Samvat	296–297
- Shaka Samvat	161–162
- Kali Yuga	3340–3341
Holocene calendar	10240
Iranian calendar	382 BP – 381 BP
Islamic calendar	394 BH – 393 BH
Javanese calendar	118–119
Julian calendar	240; CCXL
Korean calendar	2573
Minguo calendar	1672 before ROC; 民前1672年
Nanakshahi calendar	−1228
Seleucid era	551/552 AG
Thai solar calendar	782–783
Tibetan calendar	阴土羊年; (female Earth-Goat); 366 or −15 or −787; — to —; 阳金猴年; (male Iron-Monkey); 367 or −14 or −786

Millennium:	1st millennium
Centuries:	2nd century – 3rd century – 4th century
Decades:	210s 220s 230s – 240s – 250s 260s 270s
Years:	237 238 239 – 240 – 241 242 243

Hatra ruins

Events[change | change source]

The Roman Empire is threatened on several fronts at the same time. Africa revolts and tribes in northwest Germania, under the name of the Franks, are raiding the Rhine frontier.

At the court of Ardashir I, Mani, a young mystic of Ctesiphon, calls himself a prophet and preaches his doctrine, Manichaeism, throughout the Persian Empire.