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.
The Indo-Tibetan Border Police (ITBP), established on 24th October, 1962, is an Indian paramilitary force that was conceived for the security of the Indian border along the Tibet Autonomous Region of China, which is spread across 2115 km. presently there are 60,500 personnel working in 55 Battalions.