hourglass; clock; time; timer; watch; hour; glass; sandglass; sand; illustration; countdown; object; vector; icon; minute; measure; symbol; background; measurement; deadline; isolated; flow; vintage; design; concept; second; stopwatch; antique; retro; old; graphic; white; sign; transparent; flat; flowing; equipment; business; classic; 3d; simple; hour-glass; wait; history; element; sand-glass; black; passing; running; realistic