Two things in the atlas are tied to this date. Each is placed here by a source that gives the day.
Keramat are holy places of Malay communities where people make vows, often linked to pious figures. Singapore's Kusu Island has three, visited by Malay and Chinese pilgrims, while religious authorities in Malaysia and Brunei have acted against the practice.
In 1977 residents of Colares, in the Brazilian state of Pará, reported lights in the sky said to suck people's blood. The Brazilian Air Force sent a team to investigate in what became known as Operação Prato.