Correspondence Ignacio Munyo, Universidad de Montevideo, Montevideo, Uruguay. Emails: imunyo@gmail.com ; imunyo@um.edu.uy This paper explores the effect of Daylight Saving Time (DST) change on aggregate crime rates. In order to do so I run regressions with hourly data on crime and I implement a regression discontinuity design with a treatment variable centered on the beginning of DST in spring. After the DST change in spring, which implies the loss of an hour at 2 a.m., there is a significant decrease in crime. Further evidence suggests that the results are not driven by a temporal displacement of crime or changes in the level of darkness. The empirical evidence suggests that reduction in crime rates could be driven by the tiredness of potential offenders and interpreted under the lens of the Routine Activities Theory. However, the study is not able to identify the direct causal effect.

中文翻译：

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夏令时与犯罪：疲劳是否也会影响犯罪行为？

通讯员 Ignacio Munyo，蒙得维的亚大学，蒙得维的亚，乌拉圭。电子邮件：imunyo@gmail.com ; imunyo@um.edu.uy 本文探讨夏令时 (DST) 变化对总体犯罪率的影响。为了做到这一点，我使用每小时的犯罪数据运行回归，并使用以春季 DST 开始为中心的处理变量实施回归不连续性设计。在春季 DST 更改（这意味着凌晨 2 点损失一个小时）之后，犯罪率显着下降。进一步的证据表明，结果不是由犯罪的时间转移或黑暗程度的变化驱动的。经验证据表明，犯罪率的降低可能是由潜在犯罪者的疲劳驱动的，并在日常活动理论的镜头下进行了解释。然而，