Find convolution of $\operatorname{sinc}(t-3)*\operatorname{sinc}(\pi(t+3))$

Question

How can I find the following convolution?$$\operatorname{sinc}(t-3)*\operatorname{sinc}(\pi(t+3))$$

Where $\operatorname{sinc}$ refers to this function.

I can't understand how to use integration to compute this function.