nonastronomical

adjective

non·​as·​tro·​nom·​i·​cal ˌnän-ˌa-strə-ˈnä-mi-kəl 

: not related to astronomy : not astronomical

In my nonastronomical mind, it always struck me as odd that the longest day of the year falls right at the beginning of summer.

—David Quick

Word History

First Known Use

1854, in the meaning defined above