Hi Alex,

As of now I am importing an xlsx file in Spreadsheet Control integrated in my application. Now on, some user actions I need to fetch value of predefined date time formatted cells. Spreadsheet range.value returns it as some numeric value instead of DateTime JS object, as shown in below code

let cellValue = range.value(); //range here is reference to Date formatted cell

Here cellValue is like 43536.479166667, so I am using this function Excel Date to JS Date(suggested by Dimitar) to convert this numeric value to JS Date Object. 

So my request was to provide following standard functions to deal with these conversions. Instead of developer finding & writing code to convert Excel date to JS date, why not Kendo can add these functions in spreadsheet JS library itself.

1. ExcelDateToJSDate //e.g. 43536.479166667 to 3/12/19 11:30

2. JSDateToExcelDate //e.g. 3/12/19 11:30 to 43536.479166667

3. ExcelDateToUTCJSDate 

4. UTCJSDateToExcelDate

Please let me know in case you need more information on it.