Why gate clocks and CFS clocks disagree

Stand at a Bangkok CFS long enough and you will hear two arrival times for the same box: the gate stamp and the CFS receiving stamp. They rarely match, and the gap is not always idle time.

Sometimes the truck waits for a bay. Sometimes paperwork trails the chassis. Sometimes the night shift uses a wall clock that runs eight minutes fast. When your supply chain monitoring board treats those stamps as one event, exception lists fill with noise.

What we put on the wall

Label both stamps. Set an acceptable gap — often 45 to 90 minutes depending on yard congestion — and only escalate when the gap exceeds that band. Supervisors then argue about process, not about who “lied” on the form.

A practical check

Pull twenty random moves from last month. Chart the gap. If more than a third sit outside your band, fix the measurement before you hire more labor for “dwell.”