GlossaryEN1 min readUpdated: Jun 23, 2026
Day Definite Delivery Services
When a shipper books Day Definite Delivery Services, the carrier makes a contractual commitment to a named calendar date—not merely an estimated window.
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Source: https://www.fedex.com/en-us/shipping/day-certain.html
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Logistics Concept
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Definition & Explanation
When a shipper books Day Definite Delivery Services, the carrier makes a contractual commitment to a named calendar date—not merely an estimated window. That binding obligation is what distinguishes these services from standard offerings, where arrival timing is approximate at best. Real-time tracking, a written delivery guarantee, and compensation clauses for missed dates are standard features. Pharmaceuticals, medical devices, electronics, and fresh produce are the sectors most reliant on this level of service, as a late delivery can trigger production downtime, spoilage, or contractual penalties. Day Definite differs from Time Definite services, which fix the hour rather than the day.
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