Re-entry as a visitor

[TPCai]

Hello!
So, I came as a visitor to Canada in February 2, the agent stamped my passaport and wrote down a date: August 1.
But I left Canada in February 24 and re-entry as visitor in April 18, I Got a new stamp in my passaport but with no date.

Witch stamp is the valid one? The second? That means I got 6 months in April?

 

[canuck_in_uk]

Hello!
So, I came as a visitor to Canada in February 2, the agent stamped my passaport and wrote down a date: August 1.
But I left Canada in February 24 and re-entry as visitor in April 18, I Got a new stamp in my passaport but with no date.

Witch stamp is the valid one? The second? That means I got 6 months in April?

The most recent stamp is valid.