All event countdowns in September 2021
September
- September
- Shang-Chi and the Legend of the Ten Rings
- Father's Day (Aus/NZ)
- Labor Day
- New Moon
- National Football League Season
- Patriot Day
- Nottingham Forest - Cardiff City (1:2)
- Leeds United - Liverpool (0-3)
- First Quarter Moon
- Coventry City - Cardiff City (1:0)
- Liverpool - AC Milan [CL] (3-2)
- The Boss Baby 2
- Liverpool - Crystal Palace (3-0)
- Cardiff City - Bournemouth (0:1)
- Full Moon
- Norwich City - Liverpool [LC] (0-3)
- Autumn (or Fall)
- September Equinox
- Blackburn Rovers - Cardiff City (5:1)
- Brentford - Liverpool (3-3)
- Anthony Joshua vs Oleksandr Usyk
- Cardiff City - West Bromwich Albion (0:4)
- Porto - Liverpool [CL] (1-5)
- Last Quarter Moon