find files by date
how to search for files created, modified or accessed on a specific date
iMac 21.5″, macOS 10.15
The following is accurate for El Capitan but I don't believe Yosemite was significantly different. Open Finder and then use the Command F key combination to show search option in the bar above where the file list normally appears. That will allow you to search by a number of different date criteria (e.g., Date Created, Last modified date, and others).