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.
Arizona State University (ASU) is the largest public university by enrollment in the United States, with more than 83,000 students and 3,300 faculty members. ASU's charter, approved by the board of regents in 2014, is based on the New American University model created by ASU President Michael M. Crow.