next_week(day = :monday)
public
Returns a new Time representing the start of the
given day in next week (default is Monday).
# File activesupport/lib/active_support/core_ext/time/calculations.rb, line 176
def next_week(day = :monday)
since(1.week).beginning_of_week.since(DAYS_INTO_WEEK[day].day).change(:hour => 0)
end