640 BC

640 BC in various calendars
Gregorian calendar	640 BC; DCXL BC
Ab urbe condita	114
Ancient Egypt era	XXVI dynasty, 25
- Pharaoh	Psamtik I, 25
Ancient Greek era	35th Olympiad (victor)¹
Assyrian calendar	4111
Balinese saka calendar	N/A
Bengali calendar	−1232
Berber calendar	311
Buddhist calendar	−95
Burmese calendar	−1277
Byzantine calendar	4869–4870
Chinese calendar	庚辰年 (Metal Dragon); 2058 or 1851; — to —; 辛巳年 (Metal Snake); 2059 or 1852
Coptic calendar	−923 – −922
Discordian calendar	527
Ethiopian calendar	−647 – −646
Hebrew calendar	3121–3122
Hindu calendars
- Vikram Samvat	−583 – −582
- Shaka Samvat	N/A
- Kali Yuga	2461–2462
Holocene calendar	9361
Iranian calendar	1261 BP – 1260 BP
Islamic calendar	1300 BH – 1299 BH
Javanese calendar	N/A
Julian calendar	N/A
Korean calendar	1694
Minguo calendar	2551 before ROC; 民前2551年
Nanakshahi calendar	−2107
Thai solar calendar	−97 – −96
Tibetan calendar	阳金龙年; (male Iron-Dragon); −513 or −894 or −1666; — to —; 阴金蛇年; (female Iron-Snake); −512 or −893 or −1665

Millennium:	1st millennium BC
Centuries:	8th century BC; 7th century BC ; 6th century BC;
Decades:	660s BC; 650s BC; 640s BC ; 630s BC; 620s BC;
Years:	643 BC; 642 BC; 641 BC; 640 BC ; 639 BC; 638 BC; 637 BC;

The year 640 BC was a year of the pre-Julian Roman calendar. In the Roman Empire, it was known as year 114 Ab urbe condita . The denomination 640 BC 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.

Gregorian calendar	640 BC DCXL BC
Ab urbe condita	114
Ancient Egypt era	XXVI dynasty, 25
- Pharaoh	Psamtik I, 25
Ancient Greek era	35th Olympiad (victor )¹
Assyrian calendar	4111
Balinese saka calendar	N/A
Bengali calendar	−1232
Berber calendar	311
Buddhist calendar	−95
Burmese calendar	−1277
Byzantine calendar	4869–4870
Chinese calendar	庚辰年 (Metal Dragon) 2058 or 1851 — to — 辛巳年 (Metal Snake) 2059 or 1852
Coptic calendar	−923 – −922
Discordian calendar	527
Ethiopian calendar	−647 – −646
Hebrew calendar	3121–3122
Hindu calendars
- Vikram Samvat	−583 – −582
- Shaka Samvat	N/A
- Kali Yuga	2461–2462
Holocene calendar	9361
Iranian calendar	1261 BP – 1260 BP
Islamic calendar	1300 BH – 1299 BH
Javanese calendar	N/A
Julian calendar	N/A
Korean calendar	1694
Minguo calendar	2551 before ROC 民前2551年
Nanakshahi calendar	−2107
Thai solar calendar	−97 – −96
Tibetan calendar	阳金龙年 (male Iron-Dragon) −513 or −894 or −1666 — to — 阴金蛇年 (female Iron-Snake) −512 or −893 or −1665

640 BC

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