Full Idea
There are many plausible example of abstract objects which, though non-spatial, do not appear to satisfy the suggested requirement of atemporality, such as chess, or the English language.
Gist of Idea
Many abstract objects, such as chess, seem non-spatial, but are not atemporal
Source
Bob Hale (Abstract Objects [1987], Ch.3.1)
Book Reference
Hale,Bob: 'Abstract Objects' [Blackwell 1987], p.49
A Reaction
Given the point that modern physics is committed to 'space-time', with no conceivable separation of them, this looks dubious. Though I think the physics could be challenged. Try Idea 7621, for example.
Related Idea
Idea 7621 Special relativity, unlike general relativity, was operationalist in spirit [Putnam on Einstein]