ADJ

the following, (the) next
the previous
the other
I was in your area the other day (= recently)
one, some
I hope we meet again some day
the very
It happened on the very day (= the same day) that Kemp was murdered. The parcel arrived the very next day
auspicious, big, eventful, field, historic, memorable, red-letter, special
The tabloid press had a field day with the latest government scandal
fateful, sad
those killed in the hail of bullets fired on that fateful day
Christmas, Mother's, etc.
feast, holy
election, opening, market, pay, polling, sports, visiting, wedding
rest, school, study, training
the pattern of the school day

DAY + VERB

pass
He thought of her less as the days passed

PREP

by the ~
He's getting stronger by the day
for a/the ~
They stayed for ten days
in a/the ~
We hope to finish the job in a few days
on the ~ (of)
On the day of his wedding he was very nervous
~ of
It was the day of the big match

ADJ

beautiful, bright, fine, glorious, hot, nice, sunny, warm
cold, grey, rainy, windy
autumn, spring, summer/summer's, winter/winter's
a fine summer's day
fun, good, great, happy, lovely, wonderful
Memories of happy days on the hills never fade
bad
On a bad day chaos reigns and nobody can predict when a plane will leave
full
I knew I had a full day's driving ahead of me

VERB + DAY

spend
We spent the day gardening

DAY + VERB

break, dawn
As day dawned I found her already hard at work

PREP

by ~
We travelled at night and rested by day
during the ~, for a/the ~
We went to the seaside for the day

PHRASES

all day (long), at the end of the day, day and night, one of those days
It's been one of those days when everything's gone wrong

ADJ

working
bad, busy, hard, long, tiring
a hard day at the office
good, quiet
7-hour, 8-hour, etc.
a 9-hour working day

PHRASES

a good day's work

ADJ

early, former, old, olden
in the early days of the cinema
school, student, young
in his younger days
golden, happy, heady
the heady days of the 'swinging sixties'
dark
the dark days of recession

PREP

in sb's ~
Things were very different in my grandfather's day
of the ~
the government of the day
since the ~s of
Much has changed since the days of my youth

PHRASES

gone are the days when …
Gone are the days when you could do a week's shopping and still have change from £20
the bad/good old days
That was in the bad old days of rampant inflation
in this day and age, in those days, the present day (= the situation that exists in the world now)
a study of European drama, from Ibsen to the present day
these days
Kids grow up so quickly these days
those were the days (= used to suggest that a time in the past was better than now)