diff --git a/man/systemctl.xml b/man/systemctl.xml
index 1c149095239..53acb083b25 100644
--- a/man/systemctl.xml
+++ b/man/systemctl.xml
@@ -2305,6 +2305,13 @@ Jan 12 10:46:45 example.com bluetoothd[8900]: gatt-time-server: Input/output err
             </varlistentry>
           </variablelist>
 
+          <variablelist>
+            <varlistentry>
+              <term><option>unix</option></term>
+              <listitem><para><literal>@seconds-since-the-epoch</literal></para></listitem>
+            </varlistentry>
+          </variablelist>
+
           <variablelist>
             <varlistentry>
               <term><option>us</option></term>
diff --git a/src/basic/time-util.c b/src/basic/time-util.c
index b659d6905d9..c0841af8f3d 100644
--- a/src/basic/time-util.c
+++ b/src/basic/time-util.c
@@ -320,11 +320,13 @@ char *format_timestamp_style(
         time_t sec;
         size_t n;
         bool utc = false, us = false;
+        int r;
 
         assert(buf);
 
         switch (style) {
                 case TIMESTAMP_PRETTY:
+                case TIMESTAMP_UNIX:
                         break;
                 case TIMESTAMP_US:
                         us = true;
@@ -350,6 +352,14 @@ char *format_timestamp_style(
         if (t <= 0 || t == USEC_INFINITY)
                 return NULL; /* Timestamp is unset */
 
+        if (style == TIMESTAMP_UNIX) {
+                r = snprintf(buf, l, "@" USEC_FMT, t / USEC_PER_SEC);  /* round down µs → s */
+                if (r < 0 || (size_t) r >= l)
+                        return NULL; /* Doesn't fit */
+
+                return buf;
+        }
+
         /* Let's not format times with years > 9999 */
         if (t > USEC_TIMESTAMP_FORMATTABLE_MAX) {
                 assert(l >= STRLEN("--- XXXX-XX-XX XX:XX:XX") + 1);
@@ -1632,6 +1642,7 @@ static const char* const timestamp_style_table[_TIMESTAMP_STYLE_MAX] = {
         [TIMESTAMP_US] = "us",
         [TIMESTAMP_UTC] = "utc",
         [TIMESTAMP_US_UTC] = "us+utc",
+        [TIMESTAMP_UNIX] = "unix",
 };
 
 /* Use the macro for enum → string to allow for aliases */
diff --git a/src/basic/time-util.h b/src/basic/time-util.h
index 895af882998..01a72026e39 100644
--- a/src/basic/time-util.h
+++ b/src/basic/time-util.h
@@ -34,6 +34,7 @@ typedef enum TimestampStyle {
         TIMESTAMP_US,
         TIMESTAMP_UTC,
         TIMESTAMP_US_UTC,
+        TIMESTAMP_UNIX,
         _TIMESTAMP_STYLE_MAX,
         _TIMESTAMP_STYLE_INVALID = -EINVAL,
 } TimestampStyle;
diff --git a/src/systemctl/systemctl.c b/src/systemctl/systemctl.c
index 9031e685ea5..0489796a75c 100644
--- a/src/systemctl/systemctl.c
+++ b/src/systemctl/systemctl.c
@@ -296,11 +296,8 @@ static int systemctl_help(void) {
                "     --boot-loader-entry=NAME\n"
                "                         Boot into a specific boot loader entry on next boot\n"
                "     --plain             Print unit dependencies as a list instead of a tree\n"
-               "     --timestamp=FORMAT  Change format of printed timestamps.\n"
-               "                         'pretty' (default): 'Day YYYY-MM-DD HH:MM:SS TZ\n"
-               "                         'us': 'Day YYYY-MM-DD HH:MM:SS.UUUUUU TZ\n"
-               "                         'utc': 'Day YYYY-MM-DD HH:MM:SS UTC\n"
-               "                         'us+utc': 'Day YYYY-MM-DD HH:MM:SS.UUUUUU UTC\n"
+               "     --timestamp=FORMAT  Change format of printed timestamps (pretty, unix,\n"
+               "                             us, utc, us+utc)\n"
                "     --read-only         Create read-only bind mount\n"
                "     --mkdir             Create directory before mounting, if missing\n"
                "     --marked            Restart/reload previously marked units\n"
diff --git a/src/test/test-time-util.c b/src/test/test-time-util.c
index 554693834bf..799d271a443 100644
--- a/src/test/test-time-util.c
+++ b/src/test/test-time-util.c
@@ -325,6 +325,11 @@ TEST(format_timestamp) {
                 assert_se(parse_timestamp(buf, &y) >= 0);
                 assert_se(x / USEC_PER_SEC == y / USEC_PER_SEC);
 
+                assert_se(format_timestamp_style(buf, sizeof(buf), x, TIMESTAMP_UNIX));
+                log_debug("%s", buf);
+                assert_se(parse_timestamp(buf, &y) >= 0);
+                assert_se(x / USEC_PER_SEC == y / USEC_PER_SEC);
+
                 assert_se(format_timestamp_style(buf, sizeof(buf), x, TIMESTAMP_UTC));
                 log_debug("%s", buf);
                 assert_se(parse_timestamp(buf, &y) >= 0);