How can I get master server time?

Hi guys , ı am using photon bolt and photon swarm.they use loadbalancing , ı can not find how can I get master server time from photonLBClient.

I have read this
https://doc.photonengine.com/en/onpremise/current/applications/loadbalancing/application

But ı could not find , is there any website for loadbalancing api or callbacks?