predeparture

1. not comparableOccurring before or in preparation for one's departure.

   The Philippines requires each outbound migrant to attend a predeparture seminar.

   2007 November 22, Jason Deparle, “Western Union Empire Moves Migrant Cash Home”, in New York Times

plural predepartures

1. rareThe time or preparations leading up to one's departure.

   Once conditioned, the odor can be used during graduated departures and predepartures as an OSS.

   2013, Steven R. Lindsay, Handbook of Applied Dog Behavior and Training

   1 more example

   […] the inherent difficulties of migratory processes, including traumatizing predepartures and journeys, the challenges of transculturation and family reorganization, and the coming to terms with new living conditions […]

   2022, Jennie Jacobs Kronenfeld, Health and Health Care Inequities, Infectious Diseases and Social Factors, page 93