Eight-day week
"Week" in certain historical calendars that consisted of eight days
For the song by The Beatles, see
Eight Days a Week
. For other uses of week, see
Week (disambiguation)
and
Weeks (disambiguation)
.
A fragment of the
Fasti Praenestini
for the month of April (
Aprilis
), showing the letters of the nundinal cycle (an eight-day market week) on the left edge
