I've eat 1 -2 days old sandwiches of peanut butter and a lot of other things (ham, chiken, chocolate, cheese...) without problems ;) 15-20 hours is not too much. I think, only raw eeg could be unsafe.
Part of the Smart grid glossary: The International Telecommunication Union (ITU) is an agency of the United Nations (UN) whose purpose is to coordinate telecommunication operations and services throughout the world. Originally founded in 1865, as the International Telegraph Union, the ITU is the oldest existing international organization.
Eastern Kentucky University, commonly referred to as Eastern or by the acronym EKU, is an undergraduate and graduate teaching and research institution located in Richmond, Kentucky, United States. EKU is accredited by the Southern Association of Colleges and Schools (SACS). It maintains six regional campuses in Corbin, Hazard, Somerset, Danville, Lancaster,and Manchester; and offers more than 40 online undergraduate and graduate options.