How to translate "tonight" meaning "this evening" and "this night"?


English word "tonight" can have a meaning "this evening" and "this night" as
well. I can translate into Japanese both of them as [今夜]{こんや}. But how to
translate it into Japanese to mean exactly "this evening" (before midnight)
and "this night" (I mean after midnight, for example at 1 AM)?




The weather report uses the following words:  
夜遅く: from 9pm to midnight  
未明: from midnight to 3am  
明け方: from 3am to 6am

So you could say 今夜未明 to mean "this night after midnight".

<http://dictionary.goo.ne.jp/jn/228567/meaning/m1u/%E5%A4%9C/>  
<http://dictionary.goo.ne.jp/jn/213462/meaning/m0u/%E6%9C%AA%E6%98%8E/>  
<http://dictionary.goo.ne.jp/jn/3055/meaning/m0u/>




The weather report uses the following words:  
夜遅く: from 9pm to midnight  
未明: from midnight to 3am  
明け方: from 3am to 6am

So you could say 今夜未明 to mean "this night after midnight".

<http://dictionary.goo.ne.jp/jn/228567/meaning/m1u/%E5%A4%9C/>  
<http://dictionary.goo.ne.jp/jn/213462/meaning/m0u/%E6%9C%AA%E6%98%8E/>  
<http://dictionary.goo.ne.jp/jn/3055/meaning/m0u/>

