[3] Micronesia lies just north of the equator, west of the International Date Line.
[4] As part of New Spain, Caroline Islands belonged to Captaincy General of the Philippines, which used the date of the western hemisphere and had the same day of the week as the Americas.
After Mexico gained its independence from Spain on September 27, 1821, Caroline Islands began using the same day of the week as Asia and to follow the eastern hemisphere at the end of 1844.
[citation needed] Before time zones were introduced, every place used local observation of the sun to set its clocks, which meant that every location used a different local mean time based on its longitude.
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