Navigation lights.
navigtion lights
Navigation lights
The USCG requires a 14-foot powerboat operating between sunset and sunrise to have navigation lights that include a red and green sidelight on the bow and a white light on the stern. Additionally, it is recommended to carry a flashlight in case of emergencies.
That would be 'running lights'.
Navigation lights
Water-Skiing
All around white light must be displayed between sunset and sunrise.
Half-hour before sunrise to half-hour after sunset
There is no fixed answer to that, for a number of reasons. Every day has different sunrise and sunset times. It also depends on where on the planet you are. There are also different interpretations of when spring starts and ends.
I do not have real-time capabilities to provide sunrise and sunset times for specific dates. You can easily find this information by using online tools like timeanddate.com or specific weather apps that provide daily sunrise and sunset times.
The should comply with IRPCS and be on between sunset and sunrise and in restricted visibility
Half-hour before sunrise to half-hour after sunset