The most appropriate day is to go and smear burgers.

I know good burgers in The Nanny only in Culture cafe and BOGOSOV burgers'steaks (new brioche buns), though not squeamish Lotteria.

And also on Bai Yai classy burger in "coco."

If you fumble, where they are cooked - tell me in the comments.

The channel about food and alcohol in Nha Trang:
Channel in telegram
Channel in instagram