ST & MG - couldn't find the day/night ref either but, as our HISL is either a white flash
OR red one, if I want to be sure someone will see us (& avoid collision) I don't really give a fig whether it's day or night, allowed or not.
I'll also put the strobe lights on if it merits it - they're white too - the only red light showing will be the port nav light!
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