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  2. May 18 - Wikipedia

    en.wikipedia.org/wiki/May_18

    May 18 is the 138th day of the year (139th in leap years) in the Gregorian calendar; 227 days remain until the end of the year. Events Pre-1600 ... 1980 – Students ...

  3. May 1980 - Wikipedia

    en.wikipedia.org/wiki/May_1980

    May 8, 1980: Eradication of smallpox announced by World Health Organization May 18, 1980: ... took place in May 1980: ... less than a week before the 40th anniversary ...

  4. 1980 eruption of Mount St. Helens - Wikipedia

    en.wikipedia.org/wiki/1980_eruption_of_Mount_St...

    On March 27, 1980, a series of volcanic explosions and pyroclastic flows began at Mount St. Helens in Skamania County, Washington, United States.A series of phreatic blasts occurred from the summit and escalated until a major explosive eruption took place on May 18, 1980, at 8:32 am.

  5. Category:1980 in the United States by month - Wikipedia

    en.wikipedia.org/wiki/Category:1980_in_the...

    May 1980 events in the United States (1 C, 10 P) June 1980 events in the United States (1 C, 5 P) July 1980 events in the United States (1 C, 5 P)

  6. 1980 - Wikipedia

    en.wikipedia.org/wiki/1980

    1980 was a leap year starting on Tuesday of the Gregorian calendar, the 1980th year of the Common Era (CE) and Anno Domini (AD) designations, the 980th year of the 2nd millennium, the 80th year of the 20th century, and the 1st year of the 1980s decade.

  7. Category:1980 in North America by month - Wikipedia

    en.wikipedia.org/wiki/Category:1980_in_North...

    May 1980 events in North America (3 C, 3 P) June 1980 events in North America (2 C) July 1980 events in North America (2 C, 1 P) August 1980 events in North America (3 C)

  8. List of 1980 box office number-one films in the United States

    en.wikipedia.org/wiki/List_of_1980_box_office...

    18: April 30, 1980: $1,078,596: Kramer vs. Kramer grossed $1.4 million for the weekend ended April 27 from all markets. Where the Buffalo Roam grossed $1.8 million. [25] [26] 19: May 7, 1980: $847,617: Kramer vs. Kramer grossed $1.1 million for the weekend ended May 4 from all markets [27] [28] 20: May 14, 1980: Friday the 13th: $2,237,500

  9. Doomsday rule - Wikipedia

    en.wikipedia.org/wiki/Doomsday_rule

    To find which day of the week Christmas Day of 2021 is, proceed as follows: in the year 2021, doomsday is on Sunday. Since December 12 is a doomsday, December 25, being thirteen days afterwards (two weeks less a day), fell on a Saturday. Christmas Day is always the day of the week before doomsday.