Yeah, I thought about it as meaning north in the southern hemisphere. Rather than Nadarma as an Anglification of Ndarma, I would go either with Indarma, Indala, Darman or something else. I am open to suggestions. I don't know what to say Southern Cross wise, I know that its a stellar formation (I forgot the right term at the moment), but I think Engells would avoid using cross terminology.
The Anglicisations I came up with are based on what I saw in the names of Shona settlements in Zimbabwe during the colonial rule and how they were Anglicised.
I would go for Indala.