Navigation light system for an unmanned aerial vehicle , such as a multicopter type unmanned aerial vehicle, comprising: a plurality of light emission units , wherein each of the plurality of light emission units has a unit-specific light emission direction and is con - figured to provide a light output around the unit-specific light emission direc - tion and wherein each of the plurality of light emission units comprises a multi-color light source capable of emitting red light, green light, and white light; and a controller coupled to each of the plurality of light emission units , wherein, when the navigation light system is installed to the unmanned aerial vehicle , the plurality of light emission units are arranged to jointly provide a navigation light pattern around the unmanned aerial vehicle and wherein the light outputs of adjacent light emission units have an overlap ; and wherein the controller of the navigation light system is configured to receive a momentary flight direction of the unmanned aerial vehicle when the navigation light system is installed to the unmanned aerial vehicle and to operate each of the plurality of light emission units depending on a relation between the momentary flight direction of the unmanned aerial vehicle and the respective unit-specific light emission direction , with the navigation light pattern around the unmanned aerial vehicle providing a red sector , a green sector , and a white sector in accordance with the momentary flight direction of the unmanned aerial vehicle , characterised in that the controller is configured to provide a white flight direction indicator light output with the overlap of the light outputs of adjacent light emis - sion units at a border between the red sector and the green sector . a plurality of light emission units , wherein each of the plurality of light emission units has a unit-specific light emission direction and is con - figured to provide a light output around the unit-specific light emission direc - tion and wherein each of the plurality of light emission units comprises a multi-color light source capable of emitting red light, green light, and white light; and a controller coupled to each of the plurality of light emission units , wherein, when the navigation light system is installed to the unmanned aerial vehicle , the plurality of light emission units are arranged to jointly provide a navigation light pattern around the unmanned aerial vehicle and wherein the light outputs of adjacent light emission units have an overlap ; and wherein the controller of the navigation light system is configured to receive a momentary flight direction of the unmanned aerial vehicle when the navigation light system is installed to the unmanned aerial vehicle and to operate each of the plurality of light emission units depending on a relation between the momentary flight direction of the unmanned aerial vehicle and the respective unit-specific light emission direction , with the navigation light pattern around the unmanned aerial vehicle providing a red sector , a green sector , and a white sector in accordance with the momentary flight direction of the unmanned aerial vehicle , characterised in that the controller is configured to provide a white flight direction indicator light output with the overlap of the light outputs of adjacent light emis - sion units at a border between the red sector and the green sector . <EOS>