A circuit for implementing a configurable light timer controlling a light is disclosed. The circuit comprises an input portion for receiving timing characterization data, the input portion having a slot adapted to receive a portable memory device storing the timing characterization data; a control circuit coupled to access a set of data of a plurality of sets of data of the timing characterization data; and a multiple setting selection actuator coupled to the control circuit, the multiple setting selection actuator enabling a selection of the set of data to be implemented by the control circuit. A method of implementing a configurable light timer is also disclosed.