Server starts 1 21 * * 1,4,5
and goes down again 1 6 * * 2,5,6.
In the meantime, you can download MultiMC
and add the instance so you can play right
away when the server comes up.
Click "Add Instance"
Click "Import from zip"
Copy paste the url:
https://txwea.boo/instance.zip
And click ok, then launch the instance to connect.