Definition
WKDAYS is a NOTAM and chart contraction used to indicate that a published time, restriction, or service applies Monday through Friday, excluding Saturday and Sunday.
Plain English
When you see WKDAYS in a NOTAM or on a chart, it means the rule or service is in effect Monday through Friday only — not on the weekend.
Context Anchor
Seen in aviation notices, airport remarks, runway closure times, service hours, and schedule notes.
Derivation
WKDAYS is a shortened written form of “weekdays.” It saves space in compact aviation notices while keeping the meaning: the normal Monday-through-Friday workweek.
Why Pilots Care
Hours of operation for control towers, fuel services, customs, and airspace restrictions often differ on weekends. Misreading WKDAYS as 'every day' can lead to arriving at a closed facility or busting a restriction that doesn't apply when you thought it did.
Intuition Check
Do not read WKDAYS as “every day of the week.” It means Monday through Friday only.
Example Sentence 1
The NOTAM stated that the tower was in operation 0700–1900 WKDAYS, so I planned a Saturday arrival assuming the field would be uncontrolled.
Example Sentence 2
Check the airport directory to confirm fuel service is available on WKDAYS.