Clock synchronization

As mentioned here:

TTN doesn’t support DeviceTimeReq.
So, to sync time I should use Application Layer Clock Synchronization as here:
https://lora-alliance.org/sites/default/files/2018-09/application_layer_clock_synchronization_v1.0.0.pdf

How do I sync time for test purposes? Is there some “magic button” on TTN console to sync time via AppLayer or maybe some cloud-based app, which I can connect to my console to sync tme or something.

I just don’t want to write time synchronization server app for myself.

Did you read Time synchronisation of a Node?

That link seems to be broken.

Now at:

https://lora-alliance.org/resource_hub/lorawan-application-layer-clock-synchronization-specification-v1-0-0/