day算什么词性 national

算名词词性，例如：

1、National Day is only ten days away.离国庆节只有十天了。

2、Colourful neon lights were hung here and there during National day.国庆节期间到处挂着彩灯。

3、Several new plays will be performed on National Day.国庆日将上演几个新戏。