Convert dates stored as text to dates - Microsoft Support
Because Error Checking in Excel can identify text-formatted dates with two-digit years, you can use the automatic correction options to convert them to date-formatted dates. You can use the DATEVALUE function to convert most other types of text dates to dates.
Format a date the way you want - Microsoft Support
When you type something like 2/2 in a cell, Excel for the web thinks you’re typing a date and shows it as 2-Feb. But you can change the date to be shorter or longer. To see a short date like 2/2/2013, select the cell, and then click Home > Number Format Short Date.
Convert times - Microsoft Support
Here are several ways to convert time units, such as how many hours there are in 5.5 days, how many days there are in 3.45 years, or how many months are between a beginning and an ending date. Convert between time units. Convert a standard time format to a decimal number. Convert from a decimal to the standard time format. Need more help?
Excel calendar templates - Microsoft Support
Many calendar templates are available for use in Microsoft Excel. A template provides a basic calendar layout that you can easily adapt for your needs. An Excel calendar template may have one or more of these features: Twelve months in one or separate worksheets.
Create or delete a custom list for sorting and filling data
Create a list of sequential dates. Use a custom list to sort or fill in a user-defined order. Excel provides day-of-the-week and month-of-the year built-in lists, but you can also create your own custom list.
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.
Format numbers - Microsoft Support
Fix text-formatted numbers by applying a number format. Format numbers as dates, currency, or even fractions to cells in a worksheet. For example, if you’re working on your quarterly budget, the Currency number format shows your numbers as money.
MONTH function - Microsoft Support
The MONTH function syntax has the following arguments: Serial_number Required. The date of the month you are trying to find. Dates should be entered by using the DATE function, or as results of other formulas or functions. For example, use DATE (2008,5,23) for the 23rd day of May, 2008. Problems can occur if dates are entered as text. Remarks.
Create a calendar by using a template - Microsoft Support
A template provides a basic calendar layout that you can easily adapt for your needs. You can download calendar templates with useful and creative themes when you click File > New in Excel. Select Search for online templates, type calendar, and select the magnifying glass .
Create a forecast in Excel for Windows - Microsoft Support
When you create a forecast, Excel creates a new worksheet that contains both a table of the historical and predicted values and a chart that expresses this data. A forecast can help you predict things like future sales, inventory requirements, or consumer trends.
Excel calendar templates - Microsoft Support
Many calendar templates are available for use in Microsoft Excel. A template provides a basic calendar layout that you can easily adapt for your needs. An Excel calendar template may have one or more of these features: Twelve months in one or separate worksheets.