Why can't i say "Kami tiba di Jepang DI hari Senin" ?
Why is DI with ARRIVED, not KE?
KE is TO in English.
In English, we use either "Arrive AT" or "Arrive IN", depending on the context.
Arrive in Japan.
Arrive at XYZ airport.
We never say "Arrive TO". We can use it in Spanish "Llegar A" (A means TO).