This question asks:
How long will it be until Garmin's systems are operational again?
Resolution occurs as the first time at which all Garmin connect users are able to automatically synchronise and use services as usual.
A statement to this effect from Garmin's Twitter account will be sufficient for resolution, unless this is contradicted by media reports.
If Garmins services are fully operational for any period of time, before being taken down by a second attack, this question resolves as the time at which they were temporarily restored.
If Garmins systems are still not operational on 2020-08-15, this question resolves as ">2020-08-15".