As we said before, there is no way to force it to update other than purging both the page cache and the DPL cache. However, the wikitext that HumansCanWinElves suggested should set the DPL cache period appropriately to allow it to refresh the next time the page is purged the following day. Purging the page happens periodically and users can forcefully purge the page if need be.
Edit: Just to make sure, did you want it to change every day or every other day? Every day would be 24 hours and every other day would be 48 hours.