On both days, perhaps you uploaded or downloaded files from a centralfile server.
您可能在这两天中都向中央文件服务器上传或从中下载了一些文件。
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One of the simplest ways to achieve this is to create a common centralfile repository, where everyone regularly uploads their work, and shares it with the team.
The Domino Directory typically keeps information recent and up-to-date, because authentication process USES this information and many user and server initiated tasks access this centralfile.