Timing
A "Standard C Runtime" compatible library for interfacing the DS1307 and DS3231 Real Time Clock modules.
This library is for getting/setting time from hardware RTC modules. It uses an API compatible with the AVR implementation of the Standard C runtime time library as available in the Arduino IDE since version 1.6.10 (AVR C Runtime Library 2.0.0)
Maintainer: smz (https://github.com/smz)
This library is compatible with all architectures so you should be able to use it on all the Arduino boards.
To use this library, open the Library Manager in the Arduino IDE and install it from there.