function c() {
  return CYAN substr($0, index($0, ">") + 1) OFF "  " RED "/" OFF
}
BEGIN {
  GREEN = "\033[1;32m";
  RED = "\033[1;31m";
  WHITE = "\033[1;97m";
  CYAN = "\033[1;36m";
  FAINT = "\033[2m";
  OFF = "\033[m";
}
/^[0-7] 00:00 -- 00:00/ { dayline = dayline " " c(); next }
/^[0-7] 00:00 -- / { dayline = dayline " <-|" $4 " " c(); next }
/^[0-7] [0-9]{2}:[0-9]{2} -- 00:00/ { dayline = dayline " " $2 "|-> " c(); next }
/^[0-7] [0-9]{2}:[0-9]{2} -- [0-9]{2}:[0-9]{2}/ { dayline = dayline " " $2 " - " $4 " " c(); next }
/^[0-7]$/ && dayline { print dayline "                                                                                                                                                                                                                  ;" startofweek " +" $0 " days"; }
/^[0-7]$/ {
  cmd = "date -d '" startofweek " +" $0 " days' +\"%a %e %b %Y\"";
  cmd | getline dayline;
  close(cmd);
  dayline = GREEN dayline ":   " OFF
}