Query 2 equal tables without related fields sorting by date

[Miguel Rodriguez]

Hello everyone and thank you very much for your attention.
I am new with mysql and I am encountering this difficulty:
with two equal tables with these fields:
date
supplier
concept
amount
without any related fields between them.
I would like to make a list ordered by date of both tables in a single query.

can you guide me?

Thank you very much again