Season	Events	Description	From	Until
W18	SHL DISTRIBUTION DEADLINE	Deadline for the Distribution of historic slots for Winter 2018/2019 by coordinators	2018/04/23	2018/04/23
W18	AGREED HISTORIC DEADLINE	Agreed historic slot deadline for Winter 2018/2019	2018/05/10	2018/05/10
W18	SLOT SUBMISSION DEADLINE	Deadline for Submission of initial slot requests for coordinated airports and schedule Information for facilitated airports	2018/05/17	2018/05/17
W18	SAL DISTRIBUTION DEADLINE	Deadline for the SAL distribution by coordinators and schedules facilitators for Winter 2018/2019	2018/06/07	2018/06/07
W18	IATA SLOT HANDBACK DEADLINE	IATA Slot handback deadline for Winter 2018/2019	2018/08/15	2018/08/15
W18	START OF USE IT OR LOSE IT CALCULATION	Reference date for the use it or lose it calculation for Winter 2018/2019	2018/08/31	2018/08/31