Two things in the atlas are tied to this date. Each is placed here by a source that gives the day.
The jenglot is a creature that Wikipedia calls an actively believed myth, one many people hold to be real. A 2009 study in the Malaysian Journal of Medical Sciences found jenglot hair unlikely to come from any animal species.
A rolling programme in which the Department of War publishes government records about unidentified anomalous phenomena in batches called tranches. The programme's own page dates the first tranche to 8 May 2026 and says new tranches are posted every few weeks.