Season	Events	Description	From	Until
S19	SHL DISTRIBUTION DEADLINE	Deadline for the Distribution of historic slots for Summer 2019 by coordinators	2018/09/10	2018/09/10
S19	AGREED HISTORIC DEADLINE	Agreed historic slot deadline for Summer 2019	2018/09/27	2018/09/27
S19	SLOT SUBMISSION DEADLINE	Deadline for Submission of initial slot requests for coordinated airports and schedule Information for facilitated airports	2018/10/04	2018/10/04
S19	SAL DISTRIBUTION DEADLINE	Deadline for the SAL distribution by coordinators and schedules facilitators for Summer 2019	2018/11/01	2018/11/01
S19	IATA SC 143	IATA Schedule Conference for Summer 2019	2018/11/13	2018/11/16
S19	IATA SLOT HANDBACK DEADLINE	IATA Slot handback deadline for Summer 2019	2019/01/15	2019/01/15
S19	START OF USE IT OR LOSE IT CALCULATION	Reference date for the use it or lose it calculation for Summer 2019	2019/01/31	2019/01/31