DK WSPR frequency on 60 m band

Hello.

I am now RXing the DK stations on WSPR.

The problem is that some of them are using 5.364.600 Hz USB dial, and some others 5.364.700 ???

To catch all the stations,over not a 200 but 300 Hz transmitting window, I need to change at times my RX QRG. HI.

Please, can you decide what is the only and good USB dial frequency on the 60 m band...

On the way, it will be also nice that all the others IARU-1 countries QSY also on this new dial frequency, in accordance with the IUT recommendation.