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  2. 1582 - Wikipedia

    en.wikipedia.org/wiki/1582

    Under the order, the date on the Julian calendar will be advanced by 10 days in order to synchronize the calendar date back to the equinoxes and solstices, since the gap has been increasing by one day every 100 years since the 6th century and is 10 days off schedule. [2] March 9 – Scryer Edward Kelley arrives at John Dee's house in London.

  3. Gregorian calendar - Wikipedia

    en.wikipedia.org/wiki/Gregorian_calendar

    To reinstate the association, the reform advanced the date by 10 days: [c] Thursday 4 October 1582 was followed by Friday 15 October 1582. [3] In addition, the reform also altered the lunar cycle used by the Church to calculate the date for Easter, because astronomical new moons were occurring four days before the calculated dates.

  4. Adoption of the Gregorian calendar - Wikipedia

    en.wikipedia.org/wiki/Adoption_of_the_Gregorian...

    At noon on Saturday, 7 October 1867 (Julian), the date changed to Friday, 18 October 1867 (Gregorian). Although the Julian calendar was 12 days behind the Gregorian calendar, only 11 days were skipped because Alaska also moved from the Eurasian side of the International Date Line to the American side. [16]

  5. Doomsday rule - Wikipedia

    en.wikipedia.org/wiki/Doomsday_rule

    In 1582 this modification of the Julian calendar was first instituted. In order to correct for calendar drift, 10 days were skipped, so doomsday moved back 10 days (i.e. 3 weekdays): Thursday, October 4 (Julian, doomsday is Wednesday) was followed by Friday, October 15 (Gregorian, doomsday is Sunday).

  6. Old Style and New Style dates - Wikipedia

    en.wikipedia.org/wiki/Old_Style_and_New_Style_dates

    At Jefferson's birth, the difference was eleven days between the Julian and Gregorian calendars and so his birthday of 2 April in the Julian calendar is 13 April in the Gregorian calendar. Similarly, George Washington is now officially reported as having been born on 22 February 1732, rather than on 11 February 1731/32 (Julian calendar). [ 26 ]

  7. Chamuscado and Rodríguez Expedition - Wikipedia

    en.wikipedia.org/wiki/Chamuscado_and_Rodríguez...

    The two friars and their Indian servants left behind were also soon stabbed by the Indians although two Indians escaped and returned to Mexico to tell the story. [17] The Chamuscado and Rodríguez expedition was a modest affair, but revived Spanish interest in New Mexico leading to the establishment of Spanish New Mexico a few years later by ...

  8. Proleptic Gregorian calendar - Wikipedia

    en.wikipedia.org/wiki/Proleptic_Gregorian_calendar

    The proleptic Gregorian calendar is produced by extending the Gregorian calendar backward to the dates preceding its official introduction in 1582. In nations that adopted the Gregorian calendar after its official and first introduction, dates occurring in the interim period of 15 October 1582 (the first date of use of Gregorian calendrical dates, being dated 5 October 1582 in the preceding ...

  9. Conversion between Julian and Gregorian calendars - Wikipedia

    en.wikipedia.org/wiki/Conversion_between_Julian...

    The Gregorian calendar did not exist before October 15, 1582. Gregorian dates before that are proleptic, that is, using the Gregorian rules to reckon backward from October 15, 1582. Years are given in astronomical year numbering. Augustus corrected errors in the observance of leap years by omitting leap days until AD 8.