| Singular | ephēmeris |
| Plural | ephēmeridēs; ephēmerides |
| Singular | ephēmeridis; ephēmeridos |
| Plural | ephēmeridum |
| Singular | ephēmeridī |
| Plural | ephēmeridibus |
| Singular | ephēmeridem; ephēmerida |
| Plural | ephēmeridēs; ephēmeridas |
| Singular | ephēmeride |
| Plural | ephēmeridibus |
| Singular | ephēmeris; ephēmeri |
| Plural | ephēmeridēs; ephēmerides |