
Outlook doesn't support creating calendar items that countdown (or count
up) to a specific date. You'll need to create each item individually and the
easiest way to do this is outside of Outlook and import the file to the
Calendar. You can use this method with any version of Excel and Outlook,
although some steps might be slightly different in older versions of either
program.
if you have another spreadsheet program, such as Works, you may need to
save it as a CSV or text file to import into Outlook.
Create your series in a spreadsheet program
Excel
makes it very easy because it allows you to drag and fill cells in a
series, changing the numbers in each row.
-
At the very least you need to columns, Date and Subject. (Outlook uses
Start Date, not Date as used in my examples.)
Tip: A Categories field will make it easier to delete the items if you
make a mistake when importing.
If you want to use other fields, create one sample record in an
new calendar folder and export it to Excel so you know what fields you
need. This will eliminate the need to map fields during the import
process.
- To begin with "today", press Ctrl+; (semi-colon) in the
first data row of the date column.
- Select the cell and drag down to fill the column with consecutive
dates, stopping at the date you are counting down to.
Common Excel tricks such as entering two non-consecutive dates in a
column and dragging allows you to create a pattern, such as weekly (as
shown in the screenshot) or every other day. (You can use this with
birthdays too.)
If the fill doesn't use a series, click on the Smart tag and choose
series.
- Go to the last date and enter your subject line. Use a
number as the first or last character and Excel will complete the series
when you drag. Either type the subject line twice or drag it up one cell
and change the 0 to 2, as I've done in the screenshot.

- Select both cells in the subject column and drag up. Excel will
complete the series.
- Select the entire used range and type a name for it in the named
range field above column A.

- Save and close the workbook.
Now it's time to import it into Outlook.
- Select File, Import and Export
- Select Import from another program or file.
- Select the program or file type. In this example, we're using Excel
to create the file, so we choose Microsoft Excel
- Browse for the file. (If the file is still open in Excel, it will
cause an error.)
- Select the Calendar folder you want to Import the file into.
- Click to check the box beside Import [named range] to [folder] and
if fields need mapped the Map Custom fields dialog opens.
- Outlook doesn't recognize Date, so I need to drag it to Start Date
and Outlook adds it to the Mapped From column next to Start Date.

- Click Finish to import your items.
Other Uses
You can use this method with birthdays so the subject contains the
persons age:
Mark is 1
Mark is 2
Mark is 3
If you want the appointment to say "Mark is 1 today" you'll need to learn
how to use a concatenate formula and Copy, then Paste Special, Values to
create your subject field. (=CONCATENATE(cell,cell).