In 1819, Spanish Florida was acquired from Spain. Texas was annexed to the United States in 1845. In 1846, an agreement was reached with the British to obtain Oregon County in the northwest. In 1848, the Mexican cession took over California and New Mexico in the western United States. 1853. One of the men was named charles f dowd. He believes that if one time is used, if the local time and the new time are very different, it will be difficult for the local time to be accepted. So he proposed a one-hour difference between time zones, so that when the new standard time was introduced, it would only be at most. The conversion method between US Western Time and Beijing time is: Beijing time = US Western Time + 16 hours. That is, when US Western Time is 8 a.m., Beijing time is 0 a.m. the next day. This time difference is due to ground.
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