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This is just a cool design idea.
The Calendar ICON in the left NAV could be made to be real time, so the date in the ICON image would be the correct date.
In the image below if it was implemented the NAV bar ICON would say "5"
J. Sebastian Lee Service2Client LLC 6333 E Mockingbird Ste 147 Dallas, TX 75214 - 877.251.3273