diff --git a/backends-clickhouse/src/main/scala/org/apache/gluten/utils/CHExpressionUtil.scala b/backends-clickhouse/src/main/scala/org/apache/gluten/utils/CHExpressionUtil.scala
index 3663ef07a7ac..540af65acac5 100644
--- a/backends-clickhouse/src/main/scala/org/apache/gluten/utils/CHExpressionUtil.scala
+++ b/backends-clickhouse/src/main/scala/org/apache/gluten/utils/CHExpressionUtil.scala
@@ -190,6 +190,10 @@ object CHExpressionUtil {
     REGR_INTERCEPT -> DefaultValidator(),
     REGR_SXY -> DefaultValidator(),
     TO_UTC_TIMESTAMP -> DefaultValidator(),
-    FROM_UTC_TIMESTAMP -> DefaultValidator()
+    FROM_UTC_TIMESTAMP -> DefaultValidator(),
+    UNIX_MILLIS -> DefaultValidator(),
+    UNIX_MICROS -> DefaultValidator(),
+    TIMESTAMP_MILLIS -> DefaultValidator(),
+    TIMESTAMP_MICROS -> DefaultValidator()
   )
 }
diff --git a/backends-velox/src/test/scala/org/apache/gluten/execution/ScalarFunctionsValidateSuite.scala b/backends-velox/src/test/scala/org/apache/gluten/execution/ScalarFunctionsValidateSuite.scala
index 84f580b0b781..d4ef3941205f 100644
--- a/backends-velox/src/test/scala/org/apache/gluten/execution/ScalarFunctionsValidateSuite.scala
+++ b/backends-velox/src/test/scala/org/apache/gluten/execution/ScalarFunctionsValidateSuite.scala
@@ -826,4 +826,46 @@ class ScalarFunctionsValidateSuite extends FunctionsValidateTest {
     }
   }
 
+  test("unix_millis") {
+    withTempPath {
+      path =>
+        val t1 = Timestamp.valueOf("2015-07-22 10:00:00.012")
+        val t2 = Timestamp.valueOf("2014-12-31 23:59:59.012")
+        val t3 = Timestamp.valueOf("2014-12-31 23:59:59.001")
+        Seq(t1, t2, t3).toDF("t").write.parquet(path.getCanonicalPath)
+
+        spark.read.parquet(path.getCanonicalPath).createOrReplaceTempView("time")
+        runQueryAndCompare("select unix_millis(t) from time") {
+          checkGlutenOperatorMatch[ProjectExecTransformer]
+        }
+    }
+  }
+
+  test("unix_micros") {
+    withTempPath {
+      path =>
+        val t1 = Timestamp.valueOf("2015-07-22 10:00:00.012")
+        val t2 = Timestamp.valueOf("2014-12-31 23:59:59.012")
+        val t3 = Timestamp.valueOf("2014-12-31 23:59:59.001")
+        Seq(t1, t2, t3).toDF("t").write.parquet(path.getCanonicalPath)
+
+        spark.read.parquet(path.getCanonicalPath).createOrReplaceTempView("time")
+        runQueryAndCompare("select unix_micros(t) from time") {
+          checkGlutenOperatorMatch[ProjectExecTransformer]
+        }
+    }
+  }
+
+  test("timestamp_millis") {
+    runQueryAndCompare("select timestamp_millis(l_orderkey) from lineitem") {
+      checkGlutenOperatorMatch[ProjectExecTransformer]
+    }
+  }
+
+  test("timestamp_micros") {
+    runQueryAndCompare("select timestamp_micros(l_orderkey) from lineitem") {
+      checkGlutenOperatorMatch[ProjectExecTransformer]
+    }
+  }
+
 }
diff --git a/docs/velox-backend-support-progress.md b/docs/velox-backend-support-progress.md
index 78d122147143..dcd73196158c 100644
--- a/docs/velox-backend-support-progress.md
+++ b/docs/velox-backend-support-progress.md
@@ -338,8 +338,8 @@ Gluten supports 199 functions. (Drag to right to see all data types)
 | second                        | second                 |                       | S      |                          |         |      |       |     |      |       |        |      |           |        |         |      |        |          |       |     |        |     |
 | session_window                |                        |                       |        |                          |         |      |       |     |      |       |        |      |           |        |         |      |        |          |       |     |        |     |
 | timestamp                     |                        |                       |        |                          |         |      |       |     |      |       |        |      |           |        |         |      |        |          |       |     |        |     |
-| timestamp_micros              |                        |                       |        |                          |         |      |       |     |      |       |        |      |           |        |         |      |        |          |       |     |        |     |
-| timestamp_millis              |                        |                       |        |                          |         |      |       |     |      |       |        |      |           |        |         |      |        |          |       |     |        |     |
+| timestamp_micros              |                        |    timestamp_micros                   |    S    |                          |         |      |       |     |      |       |        |      |           |        |         |      |        |          |       |     |        |     |
+| timestamp_millis              |                        |        timestamp_millis               |   S     |                          |         |      |       |     |      |       |        |      |           |        |         |      |        |          |       |     |        |     |
 | timestamp_seconds             |                        |                       |        |                          |         |      |       |     |      |       |        |      |           |        |         |      |        |          |       |     |        |     |
 | to_date                       |                        |                       | S      |                          |         |      |       |     |      |       |        | S    | S         |        |         |      |        |          |       |     |        |     |
 | to_timestamp                  |                        |                       |        |                          |         |      |       |     |      |       |        |      |           |        |         |      |        |          |       |     |        |     |
@@ -347,6 +347,8 @@ Gluten supports 199 functions. (Drag to right to see all data types)
 | to_utc_timestamp              |                        |                       |        |                          |         |      |       |     |      |       |        |      |           |        |         |      |        |          |       |     |        |     |
 | trunc                         |                        |                       |        |                          |         |      |       |     |      |       |        |      |           |        |         |      |        |          |       |     |        |     |
 | unix_timestamp                |                        | unix_timestamp        |        |                          |         |      |       |     |      |       |        |      |           |        |         |      |        |          |       |     |        |     |
+| unix_millis                |                        | unix_millis        | S       |                          |         |      |       |     |      |       |        |      |           |        |         |      |        |          |       |     |        |     |
+| unix_micros                |                        | unix_micros        |  S      |                          |         |      |       |     |      |       |        |      |           |        |         |      |        |          |       |     |        |     |
 | weekday                       |                        |                       | S      |                          |         |      |       |     |      |       |        | S    |           |        |         |      |        |          |       |     |        |     |
 | weekofyear                    | week,week_of_year      |                       | S      |                          |         |      |       |     |      |       |        |      |           |        |         |      |        |          |       |     |        |     |
 | window                        |                        |                       |        |                          |         |      |       |     |      |       |        |      |           |        |         |      |        |          |       |     |        |     |
diff --git a/gluten-core/src/main/scala/org/apache/gluten/expression/ExpressionMappings.scala b/gluten-core/src/main/scala/org/apache/gluten/expression/ExpressionMappings.scala
index 6be5b0f9bb58..7b4d6cd159ea 100644
--- a/gluten-core/src/main/scala/org/apache/gluten/expression/ExpressionMappings.scala
+++ b/gluten-core/src/main/scala/org/apache/gluten/expression/ExpressionMappings.scala
@@ -189,6 +189,10 @@ object ExpressionMappings {
     Sig[MakeYMInterval](MAKE_YM_INTERVAL),
     Sig[ToUTCTimestamp](TO_UTC_TIMESTAMP),
     Sig[FromUTCTimestamp](FROM_UTC_TIMESTAMP),
+    Sig[UnixMillis](UNIX_MILLIS),
+    Sig[UnixMicros](UNIX_MICROS),
+    Sig[MillisToTimestamp](TIMESTAMP_MILLIS),
+    Sig[MicrosToTimestamp](TIMESTAMP_MICROS),
     // JSON functions
     Sig[GetJsonObject](GET_JSON_OBJECT),
     Sig[LengthOfJsonArray](JSON_ARRAY_LENGTH),
diff --git a/shims/common/src/main/scala/org/apache/gluten/expression/ExpressionNames.scala b/shims/common/src/main/scala/org/apache/gluten/expression/ExpressionNames.scala
index 44384be72f61..7d516ecd006d 100644
--- a/shims/common/src/main/scala/org/apache/gluten/expression/ExpressionNames.scala
+++ b/shims/common/src/main/scala/org/apache/gluten/expression/ExpressionNames.scala
@@ -209,6 +209,10 @@ object ExpressionNames {
   final val MAKE_YM_INTERVAL = "make_ym_interval"
   final val TO_UTC_TIMESTAMP = "to_utc_timestamp"
   final val FROM_UTC_TIMESTAMP = "from_utc_timestamp"
+  final val UNIX_MILLIS = "unix_millis"
+  final val UNIX_MICROS = "unix_micros"
+  final val TIMESTAMP_MILLIS = "timestamp_millis"
+  final val TIMESTAMP_MICROS = "timestamp_micros"
 
   // JSON functions
   final val GET_JSON_OBJECT = "get_json_object"