Is it possible to send birthday cakes to Panshui Coal Mine on the same day in Zunyi?

Yes.

The total distance from Zunyi City to Panshui is about 40 kilometers, so it can definitely be delivered within one day.

Zunyi, referred to as "Zun", is a prefecture-level city in Guizhou Province, a provincial sub-central city, and an important city in the central Guizhou urban agglomeration. It is located in southwest China and northern Guizhou, bordering Guiyang to the south, Chongqing to the north, and Sichuan to the west. The southwest region is an important transportation hub connecting north and south, connecting east and west, and connecting rivers and seas.