How to work with dates and time?

Projects Programming
1

Hello, I would like to launch some events in date and time... but I am new on it and.... "where is the clock in arduino??" "and the calendar" .....

It is supposed that the board is not plugged to a computer.... it has to work by its own...

Thanks....

2

You can use the Time library.
http://playground.arduino.cc/code/time
However, purchase a RTC like the DS3231 and down load its library.