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1623 (MDCXXIII) was a common year starting on Sunday of the Gregorian calendar and a common year starting on Wednesday of the Julian calendar, the 1623rd year of the Common Era (CE) and Anno Domini (AD) designations, the 623rd year of the 2nd millennium, the 23rd year of the 17th century, and the 4th year of the 1620s decade. As of the start of 1623, the Gregorian calendar was 10 days ahead of the Julian calendar, which remained in localized use until 1923.
John Flamsteed was an English astronomer and the first Astronomer Royal. His main achievements were the preparation of a 3,000-star catalogue, Catalogus Britannicus, and a star atlas called Atlas Coelestis, both published posthumously. He also made the first recorded observations of Uranus, although he mistakenly catalogued it as a star, and he laid the foundation stone for the Royal Greenwich Observatory.
This article contains information about the literary events and publications of 1677.
The year 1650 in science and technology involved some significant events.
The year 1798 in science and technology involved some significant events.
The year 1761 in science and technology involved some significant events, listed below.
The year 1715 in science and technology involved some significant events.
The year 1616 in science and technology involved some significant events.
The year 1683 in science and technology involved some significant events.
The year 1621 in science and technology involved some significant events.
Johann Gabriel Doppelmayr was a German mathematician, astronomer, and cartographer.
Events from the year 1677 in England.
Richard Towneley was an English mathematician, natural philosopher and astronomer, resident at Towneley Hall, near Burnley in Lancashire. His uncle was the antiquarian and mathematician Christopher Towneley (1604–1674).
Events from the 1590s in England.
Events from the 1600s in England. This decade marks the end of the Elizabethan era with the beginning of the Jacobean era and the Stuart period.
Events from the 1610s in England.
Events from the 1620s in England. This decade sees a change of monarch.
Events from the 1630s in England.
The year 1595 in science and technology involved some significant events, some of which are listed here.
Events from the year 1808 in Scotland.