Auto-save workbook at specific time of day with filename of today's date

I have a workbook on a network. Multiple people access and change the workbook throughout the day.

I would like to automatically save the workbook into a network folder every evening (say 7pm). The file should be saved as FILENAME,today's date(ddmmyyyy).

The idea is to have a reliable and complete archive of the daily changes made to the file.

Any suggestions are welcome and much appreciated!

Have you figured out how to do this yet? I am looking for the same.