WHAT CAN I DO WITH THE BIG CLOCK IN THE MAIN HALL?

Stare at it slowly ticking away while you wait for someone to finally come to receive you?

Time isn't going by slowly. It isn't going by at all! The clock doesn't seem to be working.

You can change the time yourself using the two knobs on the right.

The top one moves the minute hand; the bottom one moves the hour hand.

What time to set it to, though?

Look carefully at the manufacturer's inscription.

Some letters stand out more than others.

X TO V.

How's your Latin?

It's okay, it’s not really Latin.

(SOLUTION FOLLOWS)

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These are Roman numerals: 10 to 5.

Set the time to "10 to 5", aka ten minutes before five o'clock (9:50).

Get the key from the secret compartment.