diff --git a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/datetimeExpressions.scala b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/datetimeExpressions.scala
index 97aacb3f7530..bf5ffa2607f2 100644
--- a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/datetimeExpressions.scala
+++ b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/datetimeExpressions.scala
@@ -353,6 +353,16 @@ case class SecondWithFraction(child: Expression, timeZoneId: Option[String] = No
   override val funcName = "getSecondsWithFraction"
 }
 
+case class SecondsSinceEpoch(child: Expression, timeZoneId: Option[String] = None)
+  extends GetTimeField {
+  def this(child: Expression) = this(child, None)
+  override def dataType: DataType = DoubleType
+  override def withTimeZone(timeZoneId: String): SecondsSinceEpoch =
+    copy(timeZoneId = Option(timeZoneId))
+  override val func = DateTimeUtils.getSecondsAfterEpoch
+  override val funcName = "getSecondsAfterEpoch"
+}
+
 trait GetDateField extends UnaryExpression with ImplicitCastInputTypes with NullIntolerant {
   val func: Int => Any
   val funcName: String
@@ -1968,6 +1978,7 @@ object DatePart {
     case "HOUR" | "H" | "HOURS" | "HR" | "HRS" => Hour(source)
     case "MINUTE" | "M" | "MIN" | "MINS" | "MINUTES" => Minute(source)
     case "SECOND" | "S" | "SEC" | "SECONDS" | "SECS" => SecondWithFraction(source)
+    case "EPOCH" => SecondsSinceEpoch(source)
     case _ => errorHandleFunc
   }
 
@@ -2055,6 +2066,7 @@ case class DatePart(field: Expression, source: Expression, child: Expression)
               - "HOUR", ("H", "HOURS", "HR", "HRS") - The hour field (0 - 23)
               - "MINUTE", ("M", "MIN", "MINS", "MINUTES") - the minutes field (0 - 59)
               - "SECOND", ("S", "SEC", "SECONDS", "SECS") - the seconds field, including fractional parts
+              - "EPOCH" - the number of seconds since 1970-01-01 00:00:00-00 (can be negative)
           - Supported string values of `field` for interval(which consists of `months`, `days`, `microseconds`) are(case insensitive):
               - "YEAR", ("Y", "YEARS", "YR", "YRS") - the total `months` / 12
               - "MONTH", ("MON", "MONS", "MONTHS") - the total `months` % 12
diff --git a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/util/DateTimeUtils.scala b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/util/DateTimeUtils.scala
index 3b974759bd6c..8b26879b32f4 100644
--- a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/util/DateTimeUtils.scala
+++ b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/util/DateTimeUtils.scala
@@ -493,6 +493,13 @@ object DateTimeUtils {
     Decimal(getMicroseconds(micros, zoneId), 8, 6)
   }
 
+  /**
+   * Returns the number of seconds since 1970-01-01 00:00:00-00 (can be negative).
+   */
+  def getSecondsAfterEpoch(micros: Long, zoneId: ZoneId): Double = {
+    micros.toDouble / MICROS_PER_SECOND
+  }
+
   /**
    * Returns local seconds, including fractional parts, multiplied by 1000000.
    *
diff --git a/sql/core/src/test/resources/sql-tests/inputs/extract.sql b/sql/core/src/test/resources/sql-tests/inputs/extract.sql
index 0f1fd5bbcca0..fde4974e4120 100644
--- a/sql/core/src/test/resources/sql-tests/inputs/extract.sql
+++ b/sql/core/src/test/resources/sql-tests/inputs/extract.sql
@@ -50,6 +50,8 @@ select extract(sec from c), extract(sec from i) from t;
 select extract(seconds from c), extract(seconds from i) from t;
 select extract(secs from c), extract(secs from i) from t;
 
+select extract(epoch from c) from t;
+
 select extract(not_supported from c) from t;
 select extract(not_supported from i) from t;
 
@@ -103,6 +105,8 @@ select date_part('sec', c), date_part('sec', i) from t;
 select date_part('seconds', c), date_part('seconds', i) from t;
 select date_part('secs', c), date_part('secs', i) from t;
 
+select date_part('epoch', c) from t;
+
 select date_part('not_supported', c) from t;
 select date_part(c, c) from t;
 select date_part(null, c) from t;
diff --git a/sql/core/src/test/resources/sql-tests/results/extract.sql.out b/sql/core/src/test/resources/sql-tests/results/extract.sql.out
index 9d3fe5d17faf..ce3133b62e21 100644
--- a/sql/core/src/test/resources/sql-tests/results/extract.sql.out
+++ b/sql/core/src/test/resources/sql-tests/results/extract.sql.out
@@ -1,5 +1,5 @@
 -- Automatically generated by SQLQueryTestSuite
--- Number of queries: 100
+-- Number of queries: 102
 
 
 -- !query
@@ -314,6 +314,14 @@ struct<extract(secs FROM c):decimal(8,6),extract(secs FROM i):decimal(8,6)>
 9.123456	6.789000
 
 
+-- !query
+select extract(epoch from c) from t
+-- !query schema
+struct<extract(epoch FROM c):double>
+-- !query output
+1.304690889123456E9
+
+
 -- !query
 select extract(not_supported from c) from t
 -- !query schema
@@ -636,6 +644,14 @@ struct<date_part(secs, c):decimal(8,6),date_part(secs, i):decimal(8,6)>
 9.123456	6.789000
 
 
+-- !query
+select date_part('epoch', c) from t
+-- !query schema
+struct<date_part(epoch, c):double>
+-- !query output
+1.304690889123456E9
+
+
 -- !query
 select date_part('not_supported', c) from t
 -- !query schema