Season 1
1948 • 2 Episodes
Season 1 of World News Tonight with David Muir premiered on August 10, 1948.
Season 2
1951 • 2 Episodes
Season 2 of World News Tonight with David Muir premiered on April 1, 1951.
Season 3
1952 • 2 Episodes
Season 3 of World News Tonight with David Muir premiered on October 5, 1952.
1952—1953
Season 4
1953 • 2 Episodes
Season 4 of World News Tonight with David Muir premiered on October 12, 1953.
Season 5
1958 • 2 Episodes
Season 5 of World News Tonight with David Muir premiered on September 15, 1958.
Season 6
1959 • 2 Episodes
Season 6 of World News Tonight with David Muir premiered on May 11, 1959.
Season 7
1960 • 2 Episodes
Season 7 of World News Tonight with David Muir premiered on December 19, 1960.
Season 8
1961 • 2 Episodes
Season 8 of World News Tonight with David Muir premiered on September 25, 1961.
Season 9
1962 • 2 Episodes
Season 9 of World News Tonight with David Muir premiered on March 26, 1962.
Season 10
1965 • 2 Episodes
Season 10 of World News Tonight with David Muir premiered on February 1, 1965.
Season 11
1967 • 2 Episodes
Season 11 of World News Tonight with David Muir premiered on October 16, 1967.
Season 12
1968 • 2 Episodes
Season 12 of World News Tonight with David Muir premiered on May 27, 1968.
Season 13
1969 • 2 Episodes
Season 13 of World News Tonight with David Muir premiered on May 19, 1969.
Season 14
1970 • 2 Episodes
Season 14 of World News Tonight with David Muir premiered on December 7, 1970.
Season 15
1975 • 2 Episodes
Season 15 of World News Tonight with David Muir premiered on September 8, 1975.
Season 16
1976 • 2 Episodes
Season 16 of World News Tonight with David Muir premiered on October 4, 1976.
Season 17
1978 • 2 Episodes
Season 17 of World News Tonight with David Muir premiered on July 10, 1978.
Season 18
1983 • 2 Episodes
Season 18 of World News Tonight with David Muir premiered on April 23, 1983.
Season 19
1983 • 3 Episodes
Season 19 of World News Tonight with David Muir premiered on August 9, 1983.
Season 20
2005 • 2 Episodes
Season 20 of World News Tonight with David Muir premiered on August 15, 2005.
Season 21
2006 • 2 Episodes
Season 21 of World News Tonight with David Muir premiered on January 3, 2006.
Season 22
2006 • 2 Episodes
Season 22 of World News Tonight with David Muir premiered on May 29, 2006.
Season 23
2009 • 2 Episodes
Season 23 of World News Tonight with David Muir premiered on December 21, 2009.
Season 24
2014 • 2 Episodes
Season 24 of World News Tonight with David Muir premiered on September 1, 2014.
Season 25
2015 • 2 Episodes
Season 25 of World News Tonight with David Muir premiered on January 2, 2015.
Season 26
2017 • 2 Episodes
Season 26 of World News Tonight with David Muir premiered on September 1, 2017.
Season 27
2021 • 2 Episodes
Season 27 of World News Tonight with David Muir premiered on August 31, 2021.
Season 28
2022 • 1 Episode
Season 28 of World News Tonight with David Muir premiered on August 31, 2022.
Season 29
2023 • 1 Episode
Season 29 of World News Tonight with David Muir premiered on August 31, 2023.
Season 30
2024 • 1 Episode
Season 30 of World News Tonight with David Muir premiered on August 31, 2024.
Season 31
2025 • 51 Episodes
Season 31 of World News Tonight with David Muir premiered on January 1, 2025.