A user wanted a variable to indicate in which week of its month a daily date fell. That question is a challenge both to imagine different definitions of weeks within months and to produce Stata code for each interpretation. It serves as a reminder that whatever date and time problems have been solved, there are still plenty more. See, for example, Cox (2010, 2012a,b, 2018b, 2019) for some previous notes in this territory.

中文翻译：

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Stata 提示 145：数月内的周数

用户想要一个变量来指示每日日期在其月份的哪一周下降。这个问题是一个挑战，既要想象几个月内对周的不同定义，又要为每种解释生成 Stata 代码。它提醒人们，无论日期和时间问题已解决，还有更多问题。例如，参见 Cox (2010, 2012a,b, 2018b, 2019)，了解该领域之前的一些注释。