This is the 515th most frequent Swedish word.
sådan
"Such" or "like that."
In this sentence, 'sådan' emphasizes the quality of the day being referred to.
En sådan dag är perfekt för att vandra.
A day like this is perfect for hiking.
'Sådan' here is used to establish a comparison or match to something previously mentioned or implied.
Hon köpte en sådan jacka som rekommenderades.
She bought such a jacket as was recommended.
'Sådana' serves to characterize the type or category of occasions being spoken about.