diff --git a/crates/nu-command/src/date/format.rs b/crates/nu-command/src/date/format.rs
index 1f5a29366..af862aef2 100644
--- a/crates/nu-command/src/date/format.rs
+++ b/crates/nu-command/src/date/format.rs
@@ -198,14 +198,6 @@ pub(crate) fn generate_strftime_list(head: Span, show_parse_only_formats: bool)
     }
 
     let specifications = vec![
-        FormatSpecification {
-            spec: "%Y",
-            description: "The full proleptic Gregorian year, zero-padded to 4 digits.",
-        },
-        FormatSpecification {
-            spec: "%C",
-            description: "The proleptic Gregorian year divided by 100, zero-padded to 2 digits.",
-        },
         FormatSpecification {
             spec: "%Y",
             description: "The full proleptic Gregorian year, zero-padded to 4 digits.",