Holidays in Marshall Islands

Official national public holidays. Regional and religious observances may vary by area.

About Time in Marshall Islands

The Explosion That Was Three Times Bigger Than Planned

On 1 July 1946, the United States detonated the first of 23 nuclear devices it would eventually test at Bikini Atoll, part of a Cold War-era program that ultimately ran to 67 tests across the Marshall Islands by 1958. The atoll's 167 residents had been relocated the previous March after being told their sacrifice would serve "the good of mankind," a phrase that would echo uncomfortably against everything that followed.

The single most consequential moment came on 1 March 1954, when the United States detonated Castle Bravo, a thermonuclear device intended to yield roughly five megatons. A miscalculation of how one of the bomb's components, lithium-7, would react during the blast instead produced a fifteen-megaton explosion, roughly a thousand times more powerful than the bomb dropped on Hiroshima and three times larger than scientists had planned for, carving a crater more than a mile wide into the reef. Radioactive fallout, a mixture of pulverised coral and fission products that observers described as falling like ashy snow, drifted over inhabited atolls that had not been evacuated in advance; on nearby Rongerik, American weather personnel were told to stay indoors within a day of the blast, but the Marshallese living there were not evacuated until two days after that. Bikini's contamination proved severe enough that a resettlement attempt in the 1970s had to be abandoned when residents' bodies showed rising radiation levels, and the atoll remains uninhabited today, seven decades after its residents were first asked to leave what they had been told would be a temporary absence.

A Navigation Tradition Nearly Two Thousand Years Old, Held Entirely in Memory

Long before satellite positioning or even the compass reached the Pacific, Marshallese navigators learned to read the ocean itself, sensing how swells generated by distant trade winds bent, reflected and interfered with one another as they passed near low-lying atolls that, at sea level, might only become visible from a few miles away. Training traditionally began with a young apprentice blindfolded in a canoe, learning to feel the sea's motion through the hull alone before ever being allowed to navigate by sight, a technique researchers trace back more than two thousand years to the islands' first settlers.

To teach this knowledge, navigators built stick charts, intricate frameworks of coconut-frond midribs bound together with fibre, with curved sticks representing wave patterns and small cowrie shells marking island positions. Crucially, the charts were never carried to sea; they existed purely as memorisation aids, studied on land and then set aside, since a navigator at sea relied entirely on sensation and memory rather than any physical reference. One of the last apprentices trained in this way, Korent Joel, began his instruction in the 1950s, only for it to be interrupted when nuclear fallout from the Bikini tests reached his home island and brought radiation sickness with it, forcing his family's displacement. Decades later, he returned to finish the voyage that would formally make him a master navigator, going on to train a new generation before his death in 2017, a rare case of a single life connecting the islands' oldest surviving knowledge system directly to their most devastating modern rupture.

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