I really wish I didn't, cause it kind of breaks sorting etc The underlying datatype of a datetime in Excel is a bit floating point number where the length of a day equals 1 and 1st Jan So 11th June If a cell contains a numeric value such as this, it can be converted to a datetime simply by applying a datetime format to the cell.
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So, if you can convert your datetimes to numbers using the above formula, output them to the relevant cells and then set the cell formats to the appropriate datetime format, e. Also Stefan de Bruijn has pointed out that there is a bug in Excel in that it incorrectly assumes is a leap year so you need to take that into account when making your calculations Wikipedia. If, like me, you can't find a datetime under date or time in the format dialog, you should be able to find it in 'Custom'. Some versions of Excel don't have date-time formats available in the standard pick lists, but you can just enter a custom format string such as yyyy-mm-dd hh: Excel can display a Date type in a similar manner to a DateTime.
ms office - "Windows Date Format" in Excel on Mac - Ask Different
Right click on the affected cell, select Format Cells , then under Category select Date and under Type select the type that looks something like this:. That should do what you requested. I tested sorting on some sample data with this format and it seemed to work fine. You can find more information here.
Using SpreadsheetGear for. NET you can do this: SpreadsheetGear also has IWorkbook.
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Also, Excel incorrectly assumes that is a leap year in all calculations. In other words, you probably need to subtract 2 days to get the correct date when working in your favorite programming language Thanks Stefan de Bruijn, I've corrected the answer and added a note about the leap year bug. Be careful, datetime format depends on Excel language.
For example, in Spanish should be: Ian Grainger Ian Grainger 2, 2 30 The above doesn't appear to work for Excel for Mac: I did that, then added ": You can do the following: Go into different types of date formats and choose: Tshilidzi Mudau 2, 22 Naveen Naveen 1 2. Just set the formatting in the cell. Glenn Lawrence Glenn Lawrence 1, 20 I'd already said that in an answer - stackoverflow.
Format a date the way you want
Maybe others can do the same to help drive change: Use the month and day fields' dropdown feature to select the zero-filled version e. Restart Excel for change to take affect. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password.