Is there a way to trigger GPIO event based on time of day or possibly every few days?

[Brian Acken]

I am attempting to use Pi4J rather than Python for my project in which I must trigger several GPIO pins at different times over the course of several days.  Is this possible?

[Robert Savage]

Sure.

Here is an example project where I used a sunrise/sunset schedule to turn on and off a GPIO pin. 

http://www.savagehomeautomation.com/projects/raspberry-pi-sunrise-sunset-timer-for-christmas-lights.html

https://github.com/savagehomeautomation/raspi-sspc 

You would need to include a scheduler library (like Quartz) or write your own code to manage the schedule.  

Thanks, Robert

[Brian Acken]

Thank you! I'll take a look at this