1604

1604 (MDCIV) was a leap year starting on Thursday of the Gregorian calendar and a leap year starting on Sunday of the Julian calendar, the 1604th year of the Common Era (CE) and Anno Domini (AD) designations, the 604th year of the 2nd millennium, the 4th year of the 17th century, and the 5th year of the 1600s decade. As of the start of 1604, 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:	1570s  1580s  1590s  – 1600s –  1610s  1620s  1630s
Years:	1601 1602 1603 – 1604 – 1605 1606 1607

1604 in other calendars

Gregorian calendar	1604 MDCIV
Ab urbe condita	2357
Armenian calendar	1053 ԹՎ ՌԾԳ
Assyrian calendar	6354
Balinese saka calendar	1525–1526
Bengali calendar	1011
Berber calendar	2554
English Regnal year	1 Ja. 1 – 2 Ja. 1
Buddhist calendar	2148
Burmese calendar	966
Byzantine calendar	7112–7113
Chinese calendar	癸卯年 (Water Rabbit) 4300 or 4240     — to — 甲辰年 (Wood Dragon) 4301 or 4241
Coptic calendar	1320–1321
Discordian calendar	2770
Ethiopian calendar	1596–1597
Hebrew calendar	5364–5365
Hindu calendars
- Vikram Samvat	1660–1661
- Shaka Samvat	1525–1526
- Kali Yuga	4704–4705
Holocene calendar	11604
Igbo calendar	604–605
Iranian calendar	982–983
Islamic calendar	1012–1013
Japanese calendar	Keichō 9 (慶長９年)
Javanese calendar	1524–1525
Julian calendar	Gregorian minus 10 days
Korean calendar	3937
Minguo calendar	308 before ROC 民前308年
Nanakshahi calendar	136
Thai solar calendar	2146–2147
Tibetan calendar	阴水兔年 (female Water-Rabbit) 1730 or 1349 or 577     — to — 阳木龙年 (male Wood-Dragon) 1731 or 1350 or 578

Events

• January 14 – Hampton Court conference with James I of England, the Anglican bishops and representatives of Puritans
• September 20 – Capture of Ostend by Spanish forces under Ambrosio Spinola after a three-year siege.
• October 9 – Supernova 1604 is observed. As of this writing, this was the last supernova to be observed in the Milky Way.
• November 1 – At Whitehall Palace in London, the William Shakespeare tragedy Othello is presented for the first time.
• The Sikh Holy Scripture Guru Granth Sahib is compiled and edited by Guru Arjan .
• Luis Váez de Torres is the first European to sail through the Torres Strait.
• France begins settling Acadia, first successful French North American colony
• France begins settling French Guiana.
• England concludes the Treaty of London with Spain, ending its involvement in the Eighty Years' War.
• Peter Blundell founds Blundell's School in Tiverton, England.
• Za Dengel deposed as Emperor of Ethiopia by Za Sellase, who restores his cousin Yaqob.
• The first known English Dictionary to be organized by alphabetical ordering was published.