Yacapaca will be offline from 20:00 GMT 26 Jan as we move our servers to a new data centre. We aim to be back online by 12:00 GMT 27 Jan, but cannot guarantee availability by then. If you want to be super-cautious, then don't schedule Yacapaca usage for tomorrow at all.
The new data centre has connectivity from multiple providers, which reduces our vulnerability to network-induced problems. I hope you will agree that Yacapaca's availability record over the last 5 years has been far better than many services you are paying through the nose for, but if there is an opportunity to improve further, we will always take it.