diff --git a/docs/cli.rst b/docs/cli.rst
index 5c3bd7e..ad88f4c 100644
--- a/docs/cli.rst
+++ b/docs/cli.rst
@@ -178,6 +178,16 @@ to change are supplied: ::
 
   $ ytpb download -i 2024-01-02T10:20:00+00/T25M30S ...
 
+*Unix timestamp*
+^^^^^^^^^^^^^^^^
+
+* ``--interval <timestamp>/<timestamp>``
+
+where ``<timestamp> = "@"<epoch-seconds>``:
+
+The date and time interval can also be specified with Unix timestamps as: ::
+
+   $ ytpb download -i @1704190800/@1704190830 ...
 
 *'Now' keyword*
 ^^^^^^^^^^^^^^^
@@ -267,21 +277,22 @@ Compatibility table
 
 .. table:: **Table:** Interval parts compatibility
 
-   +----------------------+---------------+------+----------+----------------------+-----------------+-------------+
-   |                      | Date and time | Time | Duration | Replacing components | Sequence number | 'Now', '..' |
-   +======================+===============+======+==========+======================+=================+=============+
-   | Date and time        |       Y       |  Y   |    Y     |          Y           |        Y        |      Y      |
-   +----------------------+---------------+------+----------+----------------------+-----------------+-------------+
-   | Time                 |       Y       |  Y   |    Y     |         *N*          |        Y        |      Y      |
-   +----------------------+---------------+------+----------+----------------------+-----------------+-------------+
-   | Duration             |       Y       |  Y   |   *N*    |         *N*          |        Y        |     *N*     |
-   +----------------------+---------------+------+----------+----------------------+-----------------+-------------+
-   | Replacing components |       Y       | *N*  |   *N*    |         *N*          |       *N*       |     *N*     |
-   +----------------------+---------------+------+----------+----------------------+-----------------+-------------+
-   | Sequence number      |       Y       |  Y   |    Y     |         *N*          |        Y        |      Y      |
-   +----------------------+---------------+------+----------+----------------------+-----------------+-------------+
-   | 'Now', '..'          |       Y       |  Y   |   *N*    |         *N*          |        Y        |     *N*     |
-   +----------------------+---------------+------+----------+----------------------+-----------------+-------------+
+   +---------------------------+---------------+------+----------+----------------------+-----------------+-------------+
+   |                           | Date and time | Time | Duration | Replacing components | Sequence number | 'Now', '..' |
+   |                           | / Timestamp   |      |          |                      |                 |             |
+   +===========================+===============+======+==========+======================+=================+=============+
+   | Date and time / Timestamp |       Y       |  Y   |    Y     |          Y           |        Y        |      Y      |
+   +---------------------------+---------------+------+----------+----------------------+-----------------+-------------+
+   | Time                      |       Y       |  Y   |    Y     |         *N*          |        Y        |      Y      |
+   +---------------------------+---------------+------+----------+----------------------+-----------------+-------------+
+   | Duration                  |       Y       |  Y   |   *N*    |         *N*          |        Y        |     *N*     |
+   +---------------------------+---------------+------+----------+----------------------+-----------------+-------------+
+   | Replacing components      |       Y       | *N*  |   *N*    |         *N*          |       *N*       |     *N*     |
+   +---------------------------+---------------+------+----------+----------------------+-----------------+-------------+
+   | Sequence number           |       Y       |  Y   |    Y     |         *N*          |        Y        |      Y      |
+   +---------------------------+---------------+------+----------+----------------------+-----------------+-------------+
+   | 'Now', '..'               |       Y       |  Y   |   *N*    |         *N*          |        Y        |     *N*     |
+   +---------------------------+---------------+------+----------+----------------------+-----------------+-------------+
 
 Specifying formats
 ==================
diff --git a/src/ytpb/cli/parameters.py b/src/ytpb/cli/parameters.py
index a566e63..0a71146 100644
--- a/src/ytpb/cli/parameters.py
+++ b/src/ytpb/cli/parameters.py
@@ -1,4 +1,4 @@
-from datetime import datetime, time, timedelta
+from datetime import datetime, time, timedelta, timezone
 from enum import auto, StrEnum
 from typing import Literal, NamedTuple
 
@@ -47,6 +47,12 @@ def convert(self, value: str, param, ctx) -> types.AbsolutePointInStream | str:
                 except ValueError:
                     message = f"'{value}' does not match ISO 8601 date format."
                     self.fail(message, param, ctx)
+            # Unix timestamp
+            case value if value.startswith("@"):
+                timestamp = float(value.lstrip("@"))
+                output = ensure_date_aware(
+                    datetime.fromtimestamp(timestamp, timezone.utc)
+                )
             case _:
                 self.fail("Option doesn't allow '{}' value", param, ctx)
         return output
@@ -106,6 +112,10 @@ def _parse_interval_part(
             # Date and time
             case x if "T" in x:
                 output = datetime.fromisoformat(x)
+            # Unix timestamp
+            case x if x.startswith("@"):
+                timestamp = float(x.lstrip("@"))
+                output = datetime.fromtimestamp(timestamp, timezone.utc)
             case "now" | ".." as x:
                 output = x
             case _:
diff --git a/tests/cli/test_parameters.py b/tests/cli/test_parameters.py
index 8d12992..e6244ad 100644
--- a/tests/cli/test_parameters.py
+++ b/tests/cli/test_parameters.py
@@ -86,6 +86,13 @@ def test_format_spec_with_function():
             "20240102T102000+00/..",
             (datetime(2024, 1, 2, 10, 20, tzinfo=timezone.utc), ".."),
         ),
+        (
+            "@1704190800/@1704190830.123",
+            (
+                datetime(2024, 1, 2, 10, 20, 0, tzinfo=timezone.utc),
+                datetime(2024, 1, 2, 10, 20, 30, 123000, tzinfo=timezone.utc),
+            ),
+        ),
     ],
 )
 def test_rewind_interval(value: str, expected):