Events start and end at the same time for everyone, they change every one or 2 days.
You can earn 4k points bracelet only during an event with 20 or 30 challenges.
To identify them, click on Events, then Calendar. You'll see all the events of the current month.
Events with 20 or 30 challenges gives 3k or 4k points. For one event, scroll on the score bar to check that the event offers a 4k points bracelet before trying to resolve challenges to unlock that achievement.
The achievement will unlock once you'll receive the bracelet, congratulations you're a 🐶!
During the month of October 2021, there were only three events that offered a 4k point bracelet:
- October 6th: 30 challenges (also gives 5k points bracelet, there's no achievement for this though)
- October 11th: 20 challenges
- October 21th: 20 challenges
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October 25th: 30 challenges (gives only 3k points, thanks ROBBERT DHT)
Without using any solution, it took me 2 or 3 hours to solve all the challenges, this is not an easy achievement since the event only lasts 24 hours and is during work days.
You can find solutions published by Marcela Martinez in this playlist for January to July 2022:
https://www.youtube.com/playlist?list=PLztVoyNx3rWTucbZ8ifst...Marcela should publish another playlist after July, it should be available here:
https://www.youtube.com/c/MarcelaMartinez/playlists?view=50&...(this guide was written on October 2021, it's possible that future months offer events that contain this bracelet with less than 20 challenges)