Arduino Datetime.h New! Download | 2025-2027 |

To use the DateTime.h header in your project, the recommended modern path is to download the library by Michael Margolis via the official Arduino Library Manager . This library is the evolved, more flexible version of the original DateTime library found in the legacy Arduino Playground . How to Download and Install There are two primary ways to get the necessary files: Arduino Library Manager (Recommended): Open the Arduino IDE.