^ @achduke7 ,
"the Day of the Lord" includes
all three of the following:
--the 7-year tribulation period unfolding
upon the earth [2520 days]... the "
IN the NIGHT" aspect;
--Christ's Second Coming
to the earth Rev19... the "
SUN of righteousness
ARISE" aspect;
--the 1000-year
earthly Millennial Kingdom age... the "reign...
GLORIOUSLY" aspect [see Isa24:23, for example]
It is not merely "a singular 24-hr day" kind of "day"... there is MUCH which will transpire WITHIN it (judgments [
not merely a singular 24-hr day's duration]... followed by blessings [
also not merely a singular 24-hr day's duration]);
So depending on context, any given passage may refer to one or more of these THREE aspects (example: Joel, as you provided in your post above)
[for the readers: read
both chapters of Isaiah 34-35 when ascertaining Peter's reference back to Isa34:
4 in his 2Peter3 passage regarding "the Day of the Lord"... rather than just extracting v.4 out from its overall context and coming to the incorrect conclusion, as many tend to do, that it is referring to "a singular 24-hr day". It doesn't.
That's just one point among many more that could be put... but I wanted to make this post short and sweet
]
Merry Christmas to you... and to all! G'night!