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。
A leap second is an extra second added to the last day of the month of March, June, October or December which means that the last minute in the day for that month has more than 60 seconds.
闰秒是向3、6、10或12月的最后一天添加的1秒，这意味着该月份的最后一天的最后一分钟不止60秒。
September's last day of the leaves were gone not yet finalized at an end, autumn has arrived in October.
九月的最后一天，叶落还未敲定终场，金秋的十月已经到来。
Halloween nis 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。
Halloween nis 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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