TY  - JOUR
AU  - Michael Lombardi
C2  - Scientific American
DA  - 2007-03-03
LA  - en
PB  - Scientific American
PY  - 2007
TI  - Why is a minute divided up into 60 seconds, an hour into 60 minutes, and only 24 hours in a day?
UR  - https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=50491
ER  -