Hello, the knob on the right side of the instrument cluster turn it from left to right to adjust the time. If the display is unreadable you may have a ribbon cable problem usually the only real fix is replacement. Sometimes you can remove and disassemble display and put something between the display and the cable to increase contact pressure and the display works, but not always.
If this information was helpful please hit accept. Thanks, Nick
ASE Certified Technician
Over 25 years of experience in automotive computer systems. ASE L1 Cerfification