Halloween is on October 31st, the last day of the Celtic calendar.

10月31日是万圣节，这也是凯尔特历的最后一天。

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Day light saving time in the United States starts on the last Sunday in April and ends on the last Sunday in October.

美国夏令时始于四月最后一个星期天终于十月最后一个星期天。

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Traders will be keen to tie up their transactions today - on the last day of October - to send their monthly reports to investors.

BBC: Sandy: US stock exchanges reopen

Celebrated on October 31 for more than a millennium, its origin dates back to the observation of the Celtic festival Samhain on the last day of October.

CNN: Happy Halloween

Marriott made a big move in the Middle East last week, opening three hotels on the same day, 5 October, in Doha, Qatar.

BBC: Openings: Los Angeles, Florence and Qatar