File list (Check if you may need any files):
RTClib\examples\datecalc\datecalc.ino
......\........\.s1307\ds1307.ino
......\........\......nvram\ds1307nvram.ino
......\........\......SqwPin\ds1307SqwPin.ino
......\........\..3231\ds3231.ino
......\........\pcf8523\pcf8523.ino
......\........\softrtc\softrtc.ino
......\keywords.txt
......\library.properties
......\README.md
......\RTClib.cpp
......\RTClib.h
......\examples\datecalc
......\........\ds1307
......\........\ds1307nvram
......\........\ds1307SqwPin
......\........\ds3231
......\........\pcf8523
......\........\softrtc
......\examples
RTClib
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