When was Chitei no Uta created?

"Chitei no Uta" is a fictional work and does not have a real creation date. It is possible you are thinking of a different work or a real-world place that you are misremembering.

Could you please provide more context or details about what you are looking for? For example:

* Is it a book, movie, song, or something else?

* What is the story or the content about?

* Any other keywords or details that might help identify it?

With more information, I can help you find the creation date of the work you are looking for.