A tribute to something at nine

Has it really been two decades? 
I don't feel all that old
But I've found myself again
That does things, truth be told
Maybe youth is overrated
Years not things to detest
It means that I am still alive
In the end, the only test

A really big Dealy at eight

The man waved at the crowded street
Many of them all waved back
People seemed pleased to be there
And yet, looking back
Somebody had other plans
For the nation to see
When those shots rang out that day
We were stained with history

Lots of affirmations at eight

A double-negative, in English, 
Is a positive they say
A double-positive, in French,
Is what we call Yé-yé 

It's warming up down there at eight

 An arctic front due this weekend
Things will be getting colder
I thought I'd warm it up a bit
With Brazilian bossa-nova

Get this party going at eight

Yes, I've been a way a bit
How long has it been?
Either way, I'm back again
Plus, it's Halloween 

Thank you all

I was here when it started
This was the home I chose
I watched while founders parted
The drama comes and goes

But throughout the many years
I've sent my little rhymes
And for all the laughter and tears
You have to say we had good times

When it all at last implodes
Hopefully, we'll stay friends
Even if we pick different roads
You'll have to tell me how ends

So blow a kiss, a great big mwah
It's not adeiu, just au revoir

Too many candles at eight

Has it really been that long?
The fifty-plus have found me
The gray and the extra weight
And a meteorologist knee