tos-seconds-till-lastopen

			def Secs_till_close__Future_looped= if (!Market_Hours_USED) then na  else if IsZeroFirstBar then na else
				if (DaysPassed OR !isnan(Secs_till_close__Future_looped[1])) then Secs_till_close__Future_looped[1] else
				fold ST_indx=0 to max_bars_in_day with D_start=0  while D_start==0 do if getvalue(IsNewDay,-ST_indx) and getvalue(Seconds_Till_OPEN,-ST_indx+1)<0 and getvalue(Seconds_Till_CLOSE,-ST_indx+1)>0 then getvalue(Seconds_Till_CLOSE,-ST_indx+1) else getvalue(BarFrameInSeconds,0);



		def Seconds_till_Last_Market_Bar = if (!Market_Hours_USED) then na else  if IsZeroFirstBar then na
			else if (Seconds_Till_CLOSE < Secs_till_close__Future_looped)  and Seconds_Till_OPEN<0  and Seconds_Till_CLOSE>0 then Seconds_Till_CLOSE
			else if IsNewDay and  Seconds_Till_CLOSE[1] >Seconds_till_Last_Market_Bar[1] and Seconds_Till_OPEN<0  and Seconds_Till_CLOSE>0 then Seconds_Till_CLOSE[1] else Seconds_till_Last_Market_Bar[1];