Demurrage Free Days Port Checker
Count container demurrage days using inclusive free time that starts on the discharge day, so the last free day is discharge date plus free days minus one and chargeable days run after it through pickup.
Description
Count container demurrage days using inclusive free time that starts on the discharge day, so the last free day is discharge date plus free days minus one and chargeable days run after it through pickup.
Demurrage Free Days Port Checker: Count container demurrage days using inclusive free time that starts on the discharge day, so the last free day is discharge date plus free days minus one and chargeable days run after it through pickup.
When to use Demurrage Free Days Port
Use this logistics calculation for a transparent shipment, inventory, warehouse, customs, packaging, carrier, or service-level estimate when the governing units and business rules are explicit.
- Discharge date
- Container discharge date at the terminal (YYYY-MM-DD).
- Free days
- Combined free days granted by the carrier and port.
- Pickup date
- Full gate-out / pickup date (YYYY-MM-DD).
How Demurrage Free Days Port works
Count container demurrage days using inclusive free time that starts on the discharge day, so the last free day is discharge date plus free days minus one and chargeable days run after it through pickup. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.1
- Chargeable days
- Chargeable demurrage days after the last free day.
- Last free day
- Last day of the free window (YYYY-MM-DD).
- Within free window
- True when pickup happened inside the free window.
Limitations and assumptions
- Carrier tariffs, customs rules, dangerous-goods requirements, hours-of-service rules, surcharges, port terms, dimensional divisors, and service definitions vary by jurisdiction, contract, date, mode, and commodity. A calculation is not a booking, classification, or compliance determination.
- Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.
Alternative or Complementary approaches
Verify current carrier and authority documents, retain shipment dimensions and timestamps, test boundary cases, and reconcile estimates against invoices and operational scans.
References
-
Intermodal container — Wikipedia contributors
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