Spreadsheet Day 17 Oct 2023

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.

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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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19 Dec 2024Sibiu Christmas Market, Romania
Last night of the Proms
22 Dec 2025The Nutcracker performed by the Turkish State Opera and Ballet in Ankara
23 Oct 2023Corn maze in Saylorsburg, Pennsylvania
Sociable climbers
31 Aug 2024Rocks and sand in the Sahara, Algeria
17 Sep 2025A young bull moose, Denali National Park, Alaska, United States
Nature at its colourful best
2 May 2024Craters of the Moon National Monument, Idaho, USA
13 Aug 2024Telašćica Nature Park, Dugi Otok, Croatia
2 Aug 2025Cowes Week
A touch of magic
Kick-off in Qatar
26 Dec 2025Boxing Day
Perfect, pastoral Palouse
27 Dec 2023Kirkjufell, Iceland
Farewell Ma’am
23 Jul 2025Vatican City, Rome, Italy
8 Jul 2025Seceda, Dolomites, South Tyrol, Italy
1 Jan 2026Happy New Year!
13 May 2024Fish River Canyon, Namibia
Charming Turenne
21 Sep 2025Sea Otter Awareness Week
Trunks packed for the road
12 Nov 2024Arches National Park, Utah, United States
29 Mar 2024South Stack Lighthouse, Holyhead, Wales
18 May 2025International Museum Day
1 Oct 2024Black History Month
16 Feb 2025Happy World Whale Day!
Surrounded by a sea of sand