Raj @ embedded-lab.com published a revised version of an old project, a programmable Relay Switch based on PIC16F1847 (or PIC16F628A) that can be used is various automation applications and you can independently set ON and OFF timer with maximum time interval 99 hours and 59 minutes.
Here are the summary of the features that this programmable relay switch has:
PIC Programmable Relay Switch – [Link]
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