What does this sign mean?

This is a "No Parking" sign with additional details:

• Loading Zone: This area is reserved for loading and unloading activities.
• Time Restriction: The restriction is in effect from 6 AM to 9 PM, Monday through Friday.
• Arrow Direction: The arrow indicates the direction where the restriction applies.

Essentially, parking is not allowed in this zone during the specified times, but vehicles actively involved in loading or unloading may stop temporarily.

Can someone park in this zone on a Saturday?

Yes, based on the sign, parking is allowed in this zone on Saturdays (and Sundays) because the restriction applies only from 6 AM to 9 PM, Monday through Friday. Outside these times and days, the "No Parking" restriction does not apply.