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.
Dedicated to Preserving IT History. The IT History Society (ITHS) is an international group of over 700 members working together to document, preserve, catalog, and research the history of Information Technology (IT). 1  Comprised of individuals, academicians, corporate archivists, curators of public institutions, and hobbyists, our online resources include: 1  A global network of IT historians and archivists. 2  Our exclusive International Database of Historical and Archival Sites. 3  IT Honor Roll of people who have made a noteworthy contribution to the industry.