Spreadsheet Day 17 Oct 2023

Spreadsheet Day

Whether they"re a pivot table pro or an entry-level novice, spreadsheet users worldwide have one person to thank. Dan Bricklin released the first electronic spreadsheet programme on this day in 1979, a date now commemorated as Spreadsheet Day. The day celebrates the sophisticated grids that have reshaped businesses from accounting and engineering to education and project management. Like the spreadsheets that empower modern data handling, ancient civilisations also sought innovative ways to record and track the world around them.

© George Hall/Alamy

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Today in History

Widespread and long-eared
17 Oct 2024Kochia, Hitachi, Ibaraki Prefecture, Japan
17 Oct 2025Rock River Falls, Upper Peninsula, Michigan, United States

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21 Jul 2025The summer opening of Buckingham Palace
28 May 2024The Monastery of Roussanou, Greece
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21 Oct 2024Cypress trees in George L Smith State Park, Georgia, United States
31 May 2024Gunnerside, Yorkshire Dales National Park, England
Sep 5, 2023Mount Segla, Senja Island, Norway
11 Oct 2023The Painted Hills, Oregon, USA
The mountains are calling
5 Jan 2025Plum-headed parakeet
6 Jan 2026Nuuk, Greenland
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2 Nov 2025Maple and bamboo forests in Arashiyama, Kyoto, Japan
18 Jan 2026Winnie the Pooh Day
13 Jan 2025Happy Welsh New Year!
Christmas in the cloister
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Rising with the sun
13 Sep 2025Last Night of the Proms
4 Jan 2026Kings Mountain, Chugach Mountains, Alaska, United States
10 May 2025Minnesota State Capitol, St Paul, Minnesota, United States
A 50-year balancing act