Can I use a spreadsheet to populate an offline calender in excel?

Is there any way that I can use a spreadsheet to populate a calender offline?
I'm trying to incorporate 4 spreadsheets with appointments on into one easy
to use diary for myself and 3 colleagues. I have no Idea if i can do it
automatically, but it would save so much work and hassle if i could. All
suggestions greatfuly recieved.

Hi!

One option, if it is available to you, is to link to Microsoft Outlook (another of the Office suite).

Alf