647
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| Years: 643 644 645 646 - 647 - 648 649 650 651 | |
| Decades: 610s 620s 630s - 640s - 650s 660s 670s | |
| Centuries: 6th century - 7th century - 8th century | |
Events
- The Cheomseongdae astronomical observatory is constructed in Silla around this time.af:647
ast:647 bg:647 ca:647 cs:647 de:647 el:647 es:647 eo:647 eu:647 fr:647 ko:647년 hr:647 io:647 it:647 lb:647 nl:647 nb:647 nn:647 pl:647 pt:647 ro:647 ru:647 sk:647 sl:647 sr:647 fi:647 sv:647 tt:647 uk:647 zh:647年