The National Astronomical Research Institute of Thailand (NARIT) <\/a>has released a comprehensive timeline for the first of the year\u2019s two “Sun Overhead” events. The cycle commenced today, 4 April 2026, in the southernmost district of Betong, Yala, at precisely 12:19 PM.\u00a0<\/p>\n\u00a0<\/p>\n
During this window, anyone standing outdoors will notice that their shadow\u2014and those of vertical objects like lamp posts\u2014falls directly beneath them, creating a “shadowless” illusion.<\/p>\n
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A Northward Journey<\/p>\n
According to Suparerk Karuehanon, assistant director of NARIT, the phenomenon does not occur simultaneously across the country.<\/p>\n
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Because of the Earth\u2019s curvature, the sun\u2019s 90-degree vertical alignment will gradually “march” northwards through April and May.<\/p>\n
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The Starting Point: Betong, Yala (4 April at 12:19 PM).<\/p>\n
The Final Destination: Mae Sai, Chiang Rai (22 May at 12:17 PM).<\/p>\n
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A second cycle is expected later in the year, between July and September, as the sun\u2019s relative position moves back from the north towards the south.
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