The following is a message from Open HamClock Backend contributor Chris Smith (G1FEF), with light editing by K4HCK:
Open Hamclock Backend is now fully independent of the original source and does not proxy any data from the Clear Sky Institute server. When the original backend server goes offline in June, anyone using OHB will find their HamClock will continue to work. We’ve also made some improvements over the original, especially in terms of CPU and memory use. It is now more efficient, so anyone hosting it on their own hardware will see instant improvements.
We have two more items of exciting news to share:
We now have a publicly available OHB server which anyone using HamClock is welcome to use. Just point your HamClock to: ohb.hamclock.app:80
This server is dedicated hardware hosted in a commercial datacenter and is free for all HamClock users to enjoy.
We also now have a website where you can keep track of the latest releases, find instructions on how to use OHB, see who is behind the initiative, as well as how to contact us to provide feedback and ask for assistance:
Source: Open HamClock Backend