[lordnacho]

Yes, there's a 24/5 FX market where people decide what it's worth in relation to other currencies.

[brokensegue]

The prices fluctuate not due to mere speculation (on the beauty of currencies) but the need to convert currencies to run a company or live your life (e.g. you have dollars and you need to pay your supplier in yuan).

[fjsolwmv]

FX markets are open all night but close on weekends?

[derekp7]

To paraphrase Jimmy Buffet, It is always between 9:00 AM and 5:00 PM somewhere.

[adrianscott]

agreed