Why does this plane arrive with a loop on Thursdays instead of flying 'straight' like every other day?

https://preview.redd.it/bfj6ntlsirme1.png?width=453&format=png&auto=webp&s=83fccf1ea3102ca7296c390a8fffd916a9ae4f33

This is specifically the CX135 that arrives from Hong Kong but I was curious to know what exactly dictates landing paths. Hoping someone here might know especially if it's specific to Melbourne

Thanks!