Steps to import calendar in Outlook 2007

Step 1: Open Outlook in your computer.
Step 2: Go to File and select Import and Export option.
Step 3: In the Import and Export Wizard dialog box, please select Import from another program or file in the Choose an action to perform: box, and then click the Next button.
Step 4: In the Import a File dialog box, please select the Outlook Data File (.pst), and then click the Next button.
Step 5: In the Import Outlook Data File dialog box, click the Browse button, and select the calendar file that you will import in the Open Outlook data files dialog box, and click the Open button.
Step 6: Select and highlight the folder to import from, and in our case, please click the Calendar.
Step 7: Click the Finish button.