The White House press office routinely signals the close of official business for the day by declaring a full lid, meaning no further announcements, briefings, or events are expected. For the window covering May 18 through May 23, the key variables include the administration’s daily calendar, any pending legislative action on Capitol Hill, economic releases, or responses to breaking developments that could extend operations past 6:30 PM. Quiet periods without major votes, diplomatic summits, or executive actions have historically produced earlier lids, while high-profile policy moves or unfolding events tend to push announcements later. Scheduled meetings, press briefings, or agency deadlines within the resolution period remain the primary drivers traders monitor for shifts in timing.