Sport Calendars offers you an overview of matches within different competitions.
Formula 1, European Championship / World Cup football and cycling (Giro, Tour de France and La Vuelta), the non-official releases.
The posters can be ordered individually in this webshop. Nice for keeping the scheduled matches yourself …
UEFA – FIFA – IOC – UCI – FIA schedules:
Confirmation FIA –probably– March – Available now*.
Dates currently in preparation – Confirmation UCI March – expected availability in March
Olympic Games Tokyo: (NEW)
Digital (PDF) available now.