that it's relevant to use a filter/glass after the sunset
or better saying: there's _plenty_ of evidence on blue light supressing melatonin, more than other wavelengths & we know that (melatonin) effects the circadian rhythm, thus, your sleep quality
edit: months ago i was @ a lecture of a neuro-scientist & they talked briefly about melatonin & if i'm not mistaken, changes on your circadian rhythm/sleep patterns don't happen overnight, so blocking blue light/having melatonin pills for a day or a week and expect results aren't the wisest thing to do. but i can't find a paper about this, so take with a grain of salt or ask your closest scientist about it ;)
or better saying: there's _plenty_ of evidence on blue light supressing melatonin, more than other wavelengths & we know that (melatonin) effects the circadian rhythm, thus, your sleep quality
edit: months ago i was @ a lecture of a neuro-scientist & they talked briefly about melatonin & if i'm not mistaken, changes on your circadian rhythm/sleep patterns don't happen overnight, so blocking blue light/having melatonin pills for a day or a week and expect results aren't the wisest thing to do. but i can't find a paper about this, so take with a grain of salt or ask your closest scientist about it ;)