You can set up auto replies this way:
1. Go to the File
tab in Outlook under the Info
menu. Press Automatic Replies
2. A window will appear, Press Add Rule...
3. Another window will appear where you can set up how you want your rule to work. In your case you will want to flag Reply With
and select a template
4. You can press Advanced...
to modify date settings as you wish.
5. Usually one rule will do it, but you can set up multiple rules to best suit your needs.
Unfortunately you will not be able to specify time of day this way. A VBA script is required to reach this level of precision : This script will give a head start if your comfortable doing a little coding.