The empire on which the sun never sets
Discussion
The phrase "the empire on which the sun never sets" (Spanish: el imperio donde nunca se pone el sol) has been used to describe certain global empires that were so territorially extensive that it seemed as though it was always daytime in at least one part of their territory.
The concept of an empire ruling all lands where the sun shines dates back to the Egyptians, the Mesopotamians, the Persians, and the Romans.