Spreadsheet Day
Spreadsheet Day is held on October 17. This event in the second decade of the month October is annual. 
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Spreadsheet Day has been celebrated since 2010. This is the date when the first VisiCalc spreadsheet program for personal computers was released - October 17, 1979.
A spreadsheet is a computer program that can capture, display and manipulate data arranged in rows and columns. Spreadsheets are one of the most popular tools available with personal computers. A spreadsheet is generally designed to hold numerical data and short text strings.
A spreadsheet is an easy way to store all different kinds of data. Excel was the first application to use a toolbar. The maximum length of an Excel formula is 8,192 characters. Any cell can contain only up to 32,767 characters. Up to 4,000,000,000 (yes, billion) formulas can depend on a single cell.
The UNIQUE function is a quick way to remove duplicate lines from a table of data in a spreadsheet. It returns the unique rows in the provided source range while discarding duplicates. The rows are returned in the order in which they first appear in the source range.
Similar holidays and events, festivals and interesting facts
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In 2016 a team at Australia's University of New South Wales create a new quantum bit that remains in a stable superposition for 10 times longer than previously achieved. on October 17;
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