TY - ICOMM AU - Michael Lombardi C1 - http://www.sciam.com C2 - www.sciam.com DA - 2007-03-05 LA - en M1 - 2 PB - www.sciam.com PY - 2007 TI - Why is a minute divided into 60 seconds, an hour into 60 minutes, yet there are only 24 hours in a day? UR - https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=101348 ER -