Forecast date in RRP3 & in Planning book

Hello All,

I have manually entered forecast for 01st of June 2015 but the same forecast is showing in previous bucket of planning book.

In this case system is showing required/available data as 05/31/2015 at 20:00:00 hours.

Please take a look at below screen snaps & help me in understanding which setting is causing this behaviour.

Thanks in advance.