diff --git a/main.zig b/main.zig
index eaf3f07426909a0f4cc69d5acfad711eef373068..6fcb778740a5b6b30ce3e4bfa5634ec7a732eb5a 100644
--- a/main.zig
+++ b/main.zig
@@ -45,3 +45,7 @@ test { try assertOk(1144509852789, "E",    "7"); }
 test { try assertOk(1144509852789, "w",    "14"); }
 test { try assertOk(1144509852789, "wo",   "14th"); }
 test { try assertOk(1144509852789, "ww",   "14"); }
+test { try assertOk(1144509852789, "Y",    "12006"); }
+test { try assertOk(1144509852789, "YY",   "06"); }
+test { try assertOk(1144509852789, "YYY",  "2006"); }
+test { try assertOk(1144509852789, "YYYY",  "2006"); }
diff --git a/time.zig b/time.zig
index c5204672556b6e630873cbc7826b8f5418dfabd3..f5e49db1c18e77488b963ae9cf66dcfacba16dfa 100644
--- a/time.zig
+++ b/time.zig
@@ -251,6 +251,9 @@ pub const DateTime = struct {
                     .w => try writer.print("{}", .{self.dayOfThisYear() / 7 + 1}),
                     .wo => try printOrdinal(writer, self.dayOfThisYear() / 7 + 1),
                     .ww => try writer.print("{:0>2}", .{self.dayOfThisYear() / 7 + 1}),
+                    .Y => try writer.print("{}", .{self.years + 10000}),
+                    .YY => try writer.print("{:0>2}", .{self.years % 100}),
+                    .YYY => try writer.print("{}", .{self.years}),
 
                     else => @compileError("'" ++ @tagName(tag) ++ "' not currently supported"),
                 }