The novorapid you take when you eat, so the time zone doesn't matter.
For the levemir there are different options. If you only go for a couple of days you could choose to keep it at your home time. If you go for a longer time you could move the timing.
Please ask your health care professional for advice as well, we can't give you dosing advice really
Bit of an off topic question: Does it work well for you to take your levemir only once a day? As far as I'm aware most people need to take it morning and evening.