ETD
Ocean freightEstimated Time of Departure
The planned date the vessel or flight leaves the origin port or airport.
In practice
Comes from the carrier schedule and moves often. Cut-offs (SI, VGM, CY) are set backwards from the ETD. Once the vessel has sailed the ATD replaces it.
Seen in the wild
ETD SIN 18 Oct, ETA RTM 14 Nov, subject to schedule change.