link to multisim site –
https://www.multisim.com/content/ovLz4q7mWrNNCASNSLRFuB/monostable-multivibrator/open
I found this project online that used a 555 timer chip in a monostable multivibrator to create a timed nightlight that would stay on for approximately 20 minutes.
Sean Thornton - Analog Electronics 