Why it doesn't recognize explicit date

[lenhhoxung86]

Hello, I have the following sentence:
"See you in July 18th, 2016".
When using your function "tag", it outputs:
"See you in July 18th, 2016"
I think it should include 'July 18th'. Is there a way to include it?
Also, weekday cannot be identified, for example:
"See you on Monday" --> Monday is not recognized.