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
17 Oct 2026International Archaeology Day

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17 May 2025A delta in the Venetian Lagoon, Italy
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20 Feb 2026Horsetail Fall, Yosemite National Park, California, United States
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8 Feb 2025Medieval towers in Mestia, Upper Svaneti, Georgia
2 Jan 2024Prayer flags in Phobjikha Valley, Bhutan
26 Dec 2023Happy Boxing Day!
28 Aug 2026Mont-Saint‑Michel during high tide, Normandy, France
2 Jul 2026Ceiling of the Temple of Esna, Egypt
Hiding in the woods
All hail the mighty mangrove!
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In a world of their own
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The envy of postcards and snowglobes