# Functions
DayAddOrSub 时间天加减计算.
GetWeekDay 获取周几方法.
HourAddOrSub 时间小时加减计算.
JudgeTimeOrder 判断一个时间是否在一个时间之后.
MinuteAddOrSub 时间分钟加减计算.
QueryAfterTime 获取当前时间之后的某个时间点.
QueryBeforeTime 获取当前时间之前的某个时间点.
QueryNowTime 获取当前时间.
TodayBeginTimestamp 返回今天零点的时间戳.
# Constants
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