Timing
Timekeeping functionality for Arduino
Date and Time functions, with provisions to synchronize to external time sources like GPS and NTP (Internet). This library is often used together with TimeAlarms and DS1307RTC.
Maintainer: Paul Stoffregen
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.