Wikipedia has Outstanding Animated Program, Outstanding Animated Program (nighttime) and Outstanding Animated Program - One Hour or Less (Nighttime) as the same thing: Primetime Emmy Award for Outstanding Animated Program (for Programming Less Than One Hour)
LIST GIVEN IN LENBURG
Outstanding Animated Program
(Lenburg identifies this as "outstanding animated program 78-79"; IMDB and Wikipedia identify it as 1979.
* The Lion, the Witch and the Wardrobe CBS
You're the Greatest, Charlie Brown CBS
Happy Birthday, Charlie Brown CBS
79-80 or 1980
* Carlton Your Doorman CBS
Dr. Seuss' Pontoffel Rock, Where Are You? ABC
Pink Panther in Olym-Pinks ABC
She's a Good Skate, Charlie Brown CBS
80-81 or 1981
* Life is a Circus, Charlie Brown CBS
Bugs Bunny, All American Hero CBS
Faeries CBS
Gnomes CBS
It's Magic, Charlie Brown CBS
81-82
* The Grinch Grinches the Cat in the Hat ABC
A Charlie Brown Celebration CBS
The Smurf Springtime Special NBC
Smurfs NBC
Someday You'll Find Her, Charlie Brown CBS
82-83
* Ziggy's Gift CBS
Here Comes Garfield CBS
Is This Goodbye, Charlie Brown? CBS
The Smurfs Christmas Special NBC
What Have We Learned, Charlie Brown? CBS
83-84
*Garfield on the Town CBS
A Disney Christmas Gift NBC
It's Flashbeagle, Charlie Brown CBS
The Smurfic Games NBC
Outstanding Animated Program (Daytime)
1984-1985 POSSIBLY WRONG
*Jim Henson's Muppet Babies CBS
CBS Storybreak
The Charlie Brown and Snoopy Show CBS
Fat Albert and the Cosby Kids syndicated
The Smurfs NBC
85-86 POSSIBLY WRONG
*Jim Henson's Muppet Babies CBS
CBS Storybreak
The Charlie Brown and Snoopy Show CBS
Fat Albert and the Cosby Kids syndicated
The Smurfs NBC
86-87
* Jim Henson's Muppet Babies CBS
Alvin and the Chipmunks NBC
Disney's Adventures of the Gummi Bears NBC
Punky Brewster NBC
The Smurfs NBC
87-88
* Jim Henson's Muppet Babies CBS
Alvin and the Chipmunks NBC
CBS Storybreak
Disney's DuckTales
The Smurfs
88-89
* The New Adventures of Winnie the Pooh ABC
DuckTales syndicated
Jim Henson's Muppet Babies CBS
A Pup Named
Scooby-Doo ABC
The Smurfs NBC
89-90
*The New Adventures of Winnie the Pooh
*Beetlejuice (tie?)
Outstanding Animated Program (Nighttime)
1984-1985
*Garfield in the Rough CBS
Donald Duck's 50th Birthday CBS
Snoopy's Getting Married CBS
85-86
*Garfield's Halloween Special
Garfied in Paradise
86-87
* Cathy CBS
Garfield Goes to Hollywood CBS
87-88
* A Claymation Christmas Celebration CBS
Brave Little Toaster Disney
A Garfield Christmas Special CBS
Outstanding Animated Program - For Programming More Than One Hour (Nighttime)
1988-1989
*Disney's DuckTales: Super DuckTales NBC
Outstanding Animated Program - One Hour or Less (Nighttime)
1988-1989
*Garfield: Babes and Bullets CBS
Abel's Island PBS
Garfield: His Nine Lives CBS
Madeline HBO
Meet the Raisins CBS
1989-1990
*
The Simpsons
Garfield's Feline Fantasies
Garfield's Thanksgiving
Why, Charlie Brown, Why?
The Simpsons Christmas Special
(this leaves us with two categories: Outstanding daytime; outstanding 1 hour or less)
---END LENBURG LIST---
---- IMDB -
http://www.imdb.com/Sections/Awards/Emmy_Awards/
As far as I can tell this is only primetime awards.
-----OFFICIAL EMMY SITE----
1991
Outstanding Animated Program (for Programming One Hour Or Less)
*The Simpsons
Will Vinton's Claymation Comedy Of Horrors
Garfield Gets A Life
Tiny Toon Adventures: The Looney Beginning
1992
Outstanding Animated Program (for Programming One Hour Or Less) - 1992
*A CLAYMATION EASTER
Shelley Duvall's Bedtime Stories
The Simpsons
The Ren & Stimpy Show
1993
Outstanding Animated Program (for Programming One Hour Or Less) - 1993
*
Batman: The Animated Series
Ren & Stimpy
Inspector Gadget Saves Christmas
The Tales of PEter
Rabbit and Benjamin Bunny
Liquid Television
1994
Outstanding Animated Program (for Programming One Hour Or Less) - 1994
* The Roman City
The Town Santa Forgot
Flintstones Family Christmas
Duckman
The Ren & Stimpy Show
1995
Outstanding Animated Program (for Programming One Hour Or Less) - 1995
*The Simpsons
Steven Spielberg Presents Tiny Toons Night Ghoule
Dr. Seuss' Daisy-Head Mayzie
Dexter's Laboratory in "Changes"
A
Rugrats Passover
1996
Outstanding Animated Program (for Programming One Hour Or Less) - 1996
* A Pinky & the Brain Chri
Dexter's Laboratory
Cow and Chicken in No Smoking
Duckman
The Simpsons
Bookmarks