In Reply to: You are right posted by GaryD on Sunday, 27. October 2013 at 12:22 Bali Time:
The rate is controlled by worldwide money markets, varies dependant on buying and selling of currency, political issues, interest rates etc etc etc.
Rate changes are as much due to whats happening in australia, usa and great britain as they are to do with whats going on in indonesia.
If the USD suffers, the IDR suffers.
If there is negative news on asian exchanges - the IDR suffers.
The reason it is stronger in the morning than late in the day is because their markets are open and operating whilst the rest of the world is asleep. (Accept you aussies)