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Since 2011 · Samoa and Tokelau switch sides SAMOA ← Previous Collection Next →
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Second outline 2011 · Samoa
Samoa changes sides In Samoa, Thursday 29 December 2011 was followed by Saturday 31 December. The country moved to the calendar side used by Australia and New Zealand. American Samoa kept its date.
Samoa Kiribati Philippines Alaska Kwajalein
This drawing is provisional. We may know when an island changed date without knowing the exact route of the whole line.
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Before and after: Samoa Kiribati Philippines
Reading this map UPPERCASE NAME · country; the label does not draw its border● reference island or atoll ■ city Kiribati spans several island groups. Three atolls are shown here: Tarawa (Gilbert), Kanton (Phoenix) and Kiritimati (Line). These are reference locations, not a complete representation of the country; Banaba is also outside this selection.
Read about Kiribati’s geography ↗ Coastline: Natural Earth, public domain, 1:110 million scale. Equirectangular projection centred on the Pacific. Small islands may not appear at this scale. Dots are approximate reference points, not boundaries.
All Collection ✕ Choose one to see it at full size. The last three are map variants; they do not represent new civil date changes.
A · 11 historical stages Reconstructed states, with the uncertainties described in each record.
1790–1814 Pitcairn and the Bounty calendar 1814–1844 Pitcairn: two calendars 1845–1846 The Philippines look towards Asia 1847–1867 The Tahiti problem 1867–1892 Alaska changes calendars 1892–1899 Samoa repeats 4 July 1900–1969 The Cook Islands and maps around 1900 c. 1969–1993 Kwajalein: the 1969 precedent 1993–1994 Kwajalein skips a Saturday 1995–2011 Kiribati brings its dates together Since 2011 Samoa and Tokelau switch sides B · 3 map variants Alternative map drawings. They do not extend the historical sequence.
c. 1899–1910 The phantom-island detour 1910–c. 1924 The 1910 hydrographic revision After c. 1924 A later variant The complete collection You can open every drawing and read its context without JavaScript.
1790–1814 · Pitcairn and the Bounty calendar Pipon records a one-day disagreement during his visit on 17 September 1814: the ships kept Saturday, while John Adams believed it was Sunday the 18th.
1814–1844 · Pitcairn: two calendars Pipon records a one-day disagreement during his visit on 17 September 1814: the ships kept Saturday, while John Adams believed it was Sunday the 18th.
1845–1846 · The Philippines look towards Asia Clavería’s decree of 16 August 1844 ordered Monday 30 December to be followed by Wednesday 1 January 1845. Benko reproduces the Spanish text.
1847–1867 · The Tahiti problem Kape and Koenig place a Tahitian calendar change in late 1846, in their study of a May 1847 letter from Pomare IV. We therefore do not treat 1847 as an established date of change.
1867–1892 · Alaska changes calendars The 1867 treaty documents Alaska’s transfer. The Admiralty notes explain how the change of date was reflected in the line near the Bering Strait.
1892–1899 · Samoa repeats 4 July The proclamation of 16 June 1892 ordered the old calendar’s Tuesday 5 July to be called Monday 4 July. It appeared in the Samoa Times on 18 June, page 3.
1900–1969 · The Cook Islands and maps around 1900 The 1899 Christmas Day Act directed that New Zealand’s 25 and 26 December be counted as one date, 25 December, in the Cook Islands. Tuesday the 26th would follow.
c. 1969–1993 · Kwajalein: the 1969 precedent IANA uses 1969 for an earlier Kwajalein change, but its own comment says it retains that date pending better evidence. This is not a verified 1969 government order.
1993–1994 · Kwajalein skips a Saturday The Associated Press report quoted by IANA describes a Friday-to-Sunday jump in August 1993. Its time-zone record skips Saturday 21 August in Kwajalein.
1995–2011 · Kiribati brings its dates together In 2018, Paul Eggert corrected an IANA data-entry error: the eastern islands had skipped 31 December 1994, not 1 January 1995.
Since 2011 · Samoa and Tokelau switch sides Section 5 of the 2011 Act moves the line east of Samoa and specifies 171° west. Its schedule shows the former line in red and the new line in blue. We have checked the image.
B · Map variants c. 1899–1910 · The phantom-island detour The Admiralty notes distinguish the US chart of 1899, the British chart of 1900 and the 1910 revision, reported in 1911. That revision removed the bend around Morrell and Byers, islands no longer shown on its charts.
1910–c. 1924 · The 1910 hydrographic revision The Admiralty notes distinguish the US chart of 1899, the British chart of 1900 and the 1910 revision, reported in 1911. That revision removed the bend around Morrell and Byers, islands no longer shown on its charts.
After c. 1924 · A later variant The Admiralty notes distinguish the US chart of 1899, the British chart of 1900 and the 1910 revision, reported in 1911. That revision removed the bend around Morrell and Byers, islands no longer shown on its charts.
A question as you read
It was Friday 20 August 1993 in Kwajalein. What came next? Saturday 21 Sunday 22
Discover the answer IANA’s time-zone record jumps to Sunday 22. Kwajalein skipped Saturday 21 by moving its date forward. This describes the atoll, not a change across the whole country.
Read the source: C10 → Link to this question #