628
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In the year 628
Astronomy
Hindu astronomer and mathematician Brahmagupta denies the rotation of Earth, although most other Indian astronomers of his time believe Earth rotates. See also 510 ce Astronomy. (See biography.)
MathematicsBrahmagupta writes Brahmasphuta siddhaānta ("the opening of the universe"). It concerns mensuration, trigonometry, and algebra, including excellent work on Diophantine equations and the first rules for operating with zero and with negative numbers as well as a method for approximating square roots. See also 665 Mathematics.
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628
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This article is about the year 628. For the number (and other uses), see 628 (number).
| Millennium: | 1st millennium |
|---|---|
| Centuries: | 6th century – 7th century – 8th century |
| Decades: | 590s 600s 610s – 620s – 630s 640s 650s |
| Years: | 625 626 627 – 628 – 629 630 631 |
| 628 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 628 DCXXVIII |
| Ab urbe condita | 1381 |
| Armenian calendar | 77 ԹՎ ՀԷ |
| Assyrian calendar | 5378 |
| Bahá'í calendar | -1216–-1215 |
| Bengali calendar | 35 |
| Berber calendar | 1578 |
| English Regnal year | N/A |
| Buddhist calendar | 1172 |
| Burmese calendar | -10 |
| Byzantine calendar | 6136–6137 |
| Chinese calendar | 丁亥年十一月二十日 (3264/3324-11-20) — to —
戊子年十二月初一日(3265/3325-12-1) |
| Coptic calendar | 344–345 |
| Ethiopian calendar | 620–621 |
| Hebrew calendar | 4388–4389 |
| Hindu calendars | |
| - Vikram Samvat | 684–685 |
| - Shaka Samvat | 550–551 |
| - Kali Yuga | 3729–3730 |
| Holocene calendar | 10628 |
| Iranian calendar | 6–7 |
| Islamic calendar | 6–7 |
| Japanese calendar | |
| Korean calendar | 2961 |
| Minguo calendar | 1284 before ROC 民前1284年 |
| Thai solar calendar | 1171 |
 |
Wikimedia Commons has media related to: 628 |
Year 628 (DCXXVIII) was a leap year starting on Friday (link will display the full calendar) of the Julian calendar. The denomination 628 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.
Events
By place
Europe
- Pippin of Landen becomes Mayor of the Palace in Austrasia.
Asia
- January – Third Perso-Turkic War: Emperor Heraclius ravages the environs of Ctesiphon; Tong Yabghu of the Western Gokturks storms and sacks Tbilisi.
- February 23 – Khosrau II of Persia is overthrown. His son Kavadh II rules as his successor until October.
By topic
Arts and sciences
- Brahmagupta writes the Brahmasphutasiddhanta, an early, yet very advanced, math book.
Births
Deaths
- January 22 – Saint Anastasius the Persian
- February – Khosrau II, king of Persia
- October – Kavadh II, king of Persia
- Babai the Great, Syrian monk
- Empress Suiko of Japan
- Theodelinda, queen of the Lombards
- Du Yan, Chinese chancellor of the Tang Dynasty
- Li Dashi, Chinese official and historian
- Liang Shidu
References
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Copyrights:
Houghton Mifflin Guide to Science & Technology
History of Science and Technology, edited by Bryan Bunch and Alexander Hellemans. Copyright © 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
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Mentioned in
Year 775
(in Science & Technology)
Heraclius
(Emperor of the Byzantine Empire)
Year 665
(in Science & Technology)
Theudelinda
(in archaeology)
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