1618

1618 (MDCXVIII) was a common year starting on Monday of the Gregorian calendar and a common year starting on Thursday of the Julian calendar, the 1618th year of the Common Era (CE) and Anno Domini (AD) designations, the 618th year of the 2nd millennium, the 18th year of the 17th century, and the 9th year of the 1610s decade. As of the start of 1618, the Gregorian calendar was 10 days ahead of the Julian calendar, which remained in localized use until 1923.

Millennium:	2nd millennium
Centuries:	16th century – 17th century – 18th century
Decades:	1580s  1590s  1600s  – 1610s –  1620s  1630s  1640s
Years:	1615 1616 1617 – 1618 – 1619 1620 1621

1618 in other calendars

Gregorian calendar	1618 MDCXVIII
Ab urbe condita	2371
Armenian calendar	1067 ԹՎ ՌԿԷ
Assyrian calendar	6368
Balinese saka calendar	1539–1540
Bengali calendar	1025
Berber calendar	2568
English Regnal year	15 Ja. 1 – 16 Ja. 1
Buddhist calendar	2162
Burmese calendar	980
Byzantine calendar	7126–7127
Chinese calendar	丁巳年 (Fire Snake) 4314 or 4254     — to — 戊午年 (Earth Horse) 4315 or 4255
Coptic calendar	1334–1335
Discordian calendar	2784
Ethiopian calendar	1610–1611
Hebrew calendar	5378–5379
Hindu calendars
- Vikram Samvat	1674–1675
- Shaka Samvat	1539–1540
- Kali Yuga	4718–4719
Holocene calendar	11618
Igbo calendar	618–619
Iranian calendar	996–997
Islamic calendar	1027–1028
Japanese calendar	Genna 4 (元和４年)
Javanese calendar	1538–1539
Julian calendar	Gregorian minus 10 days
Korean calendar	3951
Minguo calendar	294 before ROC 民前294年
Nanakshahi calendar	150
Thai solar calendar	2160–2161
Tibetan calendar	阴火蛇年 (female Fire-Snake) 1744 or 1363 or 591     — to — 阳土马年 (male Earth-Horse) 1745 or 1364 or 592

Events

• March 8 – Johannes Kepler discovers the third law of planetary motion (he soon rejects the idea after some initial calculations were made but on May 15 confirms the discovery).
• May 23 – The Second Defenestration of Prague – Protestant noblemen throw three representatives of Ferdinand II out of a window. The event began the Thirty Years' War.
• July 20 – Pluto reached, according to sophisticated mathematical calculations, its second most recent aphelion. The next one occurred in 1866, and the following one will occur in 2113.
• August 29 – Johan van Oldenbarnevelt and Hugo Grotius are imprisoned by Maurice of Nassau, Prince of Orange
• October 29 – English adventurer, writer, and courtier Sir Walter Raleigh is beheaded for allegedly conspiring against James I of England.

• The margraves of Brandenburg is granted Polish approval to inherit Ducal Prussia.
• November 13, the Synod of Dordrecht has its first meeting.
• Change of emperor of the Ottoman Empire from Mustafa I (1617-1623) to Osman II (1618-1622).
• The 3000 seat Teatro Farnese, the first permanent proscenium theatre, was built into the Great Hall of the Palazzo della Pilotta in Parma, Italy in 1618.