Convert dates stored as text to dates - Microsoft Support
To convert a text date in a cell to a serial number, use the DATEVALUE function. Then copy the formula, select the cells that contain the text dates, and use Paste Special to apply a date …
DATEVALUE function - Microsoft Support
2008年1月1日 · Using the default date system in Microsoft Excel for Windows, the date_text argument must represent a date between January 1, 1900 and December 31, 9999. The …
How to correct a #VALUE! error in the DATEVALUE function
2000年6月22日 · Problem: The date is not between January 1, 1990 and December 31, 9999. Solution: Make sure that the date_text argument represents a date between January 1, 1990 …
Add or subtract dates - Microsoft Support
You can add or subtract a number of days to or from a date by using a simple formula, or you can use worksheet functions that are designed to work specifically with dates in Excel. Suppose …
DATEVALUE function - Microsoft Support
Using the default date system in Microsoft Excel for Windows, the date_text argument must represent a date between January 1, 1900 and December 31, 9999. The DATEVALUE …
Change the date system, format, or two-digit year interpretation
For example, if you type the date 5/28/98, Excel assumes the date is May 28, 1998. In Microsoft Windows, you can change the way two-digit years are interpreted for all Windows programs …
Date and time functions (reference) - Microsoft Support
Use date and time functions to create formulas that return serial numbers, display a specific date or time, or that calculate the difference between dates or times.
TODAY function - Microsoft Support
This article describes the formula syntax and usage of the TODAY function in Microsoft Excel. The TODAY function returns the serial number of the current date. The serial number is the …
Date systems in Excel - Microsoft Support
Excel supports two date systems, the 1900 date system and the 1904 date system. Each date system uses a unique starting date from which all other workbook dates are calculated. All …
DATEDIF function - Microsoft Support
By default, January 1, 1900 is serial number 1, and January 1, 2008 is serial number 39448 because it is 39,447 days after January 1, 1900. The DATEDIF function is useful in formulas …
DATE function - Microsoft Support
Use Excel's DATE function when you need to take three separate values and combine them to form a date. The DATE function returns the sequential serial number that represents a …