Change the time format of my theme - "foodbackery" on Restaurant Page?

Please visit this page -

And Change the time format of all the restaurants to 24-hour format instead of 12-hour format. As we don’t want it to be 1:15 PM, but we want it to show 13:15

Similarly for 2 AM. It should show 02:00

It should happen for all the listed restaurants.

Please get in touch with the theme author to get support:

I have purchased support for 6 months too. But don’t whom to contact for the problem.

Please help me.