diff --git a/src/libs/core/impl/PartialDateTime.cpp b/src/libs/core/impl/PartialDateTime.cpp
index a2943944..1d88c3f7 100644
--- a/src/libs/core/impl/PartialDateTime.cpp
+++ b/src/libs/core/impl/PartialDateTime.cpp
@@ -66,6 +66,9 @@ namespace lms::core
             "%Y-%m-%dT%H:%M:%S",
             "%Y-%m-%d %H:%M:%S",
             "%Y/%m/%d %H:%M:%S",
+            "%Y-%m",
+            "%Y/%m",
+            "%Y",
         };
 
         for (const char* format : formats)
diff --git a/src/libs/core/test/PartialDateTime.cpp b/src/libs/core/test/PartialDateTime.cpp
index 3afd4dac..cd5b1fc1 100644
--- a/src/libs/core/test/PartialDateTime.cpp
+++ b/src/libs/core/test/PartialDateTime.cpp
@@ -87,23 +87,34 @@ namespace lms::core::stringUtils::tests
         };
 
         constexpr TestCase tests[]{
+            { "", "" },
+            { "aaaa", "" },
+            { "aaaa-bb", "" },
             { "1992", "1992" },
             { "1992-03", "1992-03" },
+            { "1992-00", "1992" },
+            { "1992-03-00", "1992-03" },
             { "1992-03-27", "1992-03-27" },
+            { "1992-00-00", "1992" },
             { "1992-03-27T15", "1992-03-27T15" },
             { "1992-03-27T15:08", "1992-03-27T15:08" },
             { "1992-03-27T15:08:57", "1992-03-27T15:08:57" },
+            { "1992-03-00T15:08:57", "1992-03" },
 
             { "1992-03-27 15", "1992-03-27T15" },
             { "1992-03-27 15:08", "1992-03-27T15:08" },
             { "1992-03-27 15:08:57", "1992-03-27T15:08:57" },
 
+            { "aaaa/bb", "" },
             { "1992", "1992" },
+            { "1992/00", "1992" },
             { "1992/03", "1992-03" },
+            { "1992/03/00", "1992-03" },
             { "1992/03/27", "1992-03-27" },
             { "1992/03/27 15", "1992-03-27T15" },
             { "1992/03/27 15:08", "1992-03-27T15:08" },
             { "1992/03/27 15:08:57", "1992-03-27T15:08:57" },
+            { "1992/03/00 15:08:57", "1992-03" },
         };
 
         for (const TestCase& test : tests)