|Source: FIDE Calendar|
|[World Events 2021]|
|Candidates Tournaments||Yekaterinburg, Russia||19 Apr||28 Apr|
|FIDE World Cup||Sochi, Russia||10 Jul||03 Aug|
|FIDE Women's World Cup 2021||Sochi, Russia||10 Jul||06 Aug|
|FIDE Chess.com Grand Swiss and Women’s Grand Swiss 2021||Isle of Man||25 Oct||08 Nov|
|FIDE World Chess Championship||Dubai, UAE||24 Nov||16 Dec|
|European Hybrid Qualification event for the FIDE World Cup||Online||22 May||30 May|
|Asian Continental Open Chess Championship||Hybrid||20 May||30 May|
|Zone 3.1 Zonal Open Championship||Hybrid||01 Jun||09 Jun|
|Zone 3.2 Zonal Open Championship||Dhaka, Bangladesh||01 Jun||09 Jun|
|Zone 3.3 Zonal Open Championship||Hybrid||01 May||10 May|
|Zone 3.4 Zonal Open Championship||Tashkent, Uzbekistan||06 May||15 May|
|Zone 3.7 Zonal Open Championship||India||2021||2021|
|2021 African Online World Cup Pre-Qualifying Chess Championship||Tornelo Platform||23 Apr||02 May|
|African Individual Chess Championship 2021 (Open & Women)||Lilongwe, Malawi||17 May||28 May|
|Zone 4.1 Individual Chess Championship 2021 (Open & Women)||Algiers, Algeria||29 Oct||06 Nov|
|Zone 4.2 Individual Chess Championship 2021 (Open & Women)||Lomé, Togo||03 Sep||11 Sep|
|Zone 4.3 Individual Chess Championship 2021 (Open & Women)||Libreville, Gabon||01 Oct||09 Oct|
|Zone 4.4 Individual Chess Championship 2021 (Open & Women)||Kigali, Rwanda||27 Aug||04 Sep|
|Zone 4.5 Individual Chess Championship 2021 (Open & Women)||Maseru, Lesotho||05 Nov||13 Nov|
[World Events 2021] - My most recent posts on these subjects were:-
[Europe] - See also European hybrid qualification tournament for the FIDE World Cup (chessbase.com), which starts,
The European Hybrid Qualification Tournament for the FIDE World Cup will take place on May 22-30 and will be played Online as a hybrid event. 36 players will qualify for the FIDE World Cup 2021. The event will be played under a knock-out system with matches consisting of 2 standard games plus tiebreaks if needed.
FIDE has asked the Continents to send the names of the participants in the World Cup before May 31st, 2021, also approving to organize Continental Hybrid Championships where no titles will be granted.
[Asia] - Zone 3.5 is missing. Zone 3.6 was covered on 2021 Oceania Zonal (chessexpress.blogspot.com). That kickoff post explained,
The 2021 Oceania Zonal is now going ahead as a 'hybrid' event. This means that the players will be playing online, but supervised by an in place arbiter. Due to the logistics of organising such an event, it will be a round robin tournament, with 1 player per country, except Australia, who can nominate 2 players.
[Africa] - I first mentioned the new zone 4.5 in FIDE Details the New Cycle (May 2019).
For more about the hybrid format, see my recent post FIDE Hybrid Competitions: 'In a few months we'll learn how well this works for World Championship qualifiers.' The experience started with zone 3.6.