Simply connect the relay coil (pins 2 & 5) in PARALLEL with led and led resistor, as shown here.
does doing this will not show abnormalities in transition time? This works well when light illuminance changes suddenly i.e. proper brightness to proper darkness but in outdoors, where I want to connect this circuit, day just not suddenly converted to nights so I think this might be a problem. Also in forums I have seen this problem of flickering relay or relay producing abnormal sounds during period of transition. Please let me know the solution for this.. Is a 555 timer IC can help?
There's a fairly easy software fix called hysteresis.
I have made this circuit with Arduino and it works perfectly but I don't want to waste microcontroller for this... Is this thing possible without Arduino?
Thanks a lot for reply guys.