On Friday evening, a car bomb exploded outside a Shiite mosque in Iskandariyah, 30 miles south of the capital, killing seven people and wounding 10, doctors said on condition of anonymity.
Explosions just do not happen of Fridays.
( z1 explode :polarity - :time ( z2 date-entity :weekday ( z3 friday ) ) :mod ( z4 just ) )