（重定向自2020s）
| 时间线 |
| 1980年代 •1990年代 • 2000年代 • 2010年代 |
| 2020年 • 2021年 • 2022年 • 2023年 • 2024年 属于21世纪 2025年 • 2026年 • 2027年 • 2028年 • 2029年
|
| 2030年代 • 2040年代 • 2050年代 • 2060年代 |
The 2020s was the third decade of the 21st century.
The C-Fish music player was developed during this period. (PROSE: Trace Memory)
The United Nations banned the use of beryllium laser weapons. (AUDIO: The Fearmonger)
By this time, the British Army had been privatised. Certain units performed private security work. (AUDIO: Signs and Wonders)
Turkey Point 3 underwent a meltdown during the 2020s. (PROSE: The Nuclear Option)
The Third Doctor remembered meeting Ezekiel Child at an older age around the 2020s, but the Doctor had not visited the decade since his exile on Earth was lifted. (PROSE: The Suns of Caresh)