diff --git a/addons/web/static/src/core/datetime/datetime_picker.js b/addons/web/static/src/core/datetime/datetime_picker.js
index 0edfa5c5e1b..c5a5013ff13 100644
--- a/addons/web/static/src/core/datetime/datetime_picker.js
+++ b/addons/web/static/src/core/datetime/datetime_picker.js
@@ -37,7 +37,8 @@ import { ensureArray } from "../utils/arrays";
  * @property {PrecisionLevel} [minPrecision="days"]
  * @property {(value: DateTime) => any} [onSelect]
  * @property {boolean} [range]
- * @property {number} [rounding=5]
+ * @property {number} [rounding=5] the rounding in minutes, pass 0 to show seconds, pass 1 to avoid
+ *  rounding minutes without displaying seconds.
  * @property {{ buttons?: any }} [slots]
  * @property {"date" | "datetime"} [type]
  * @property {NullableDateTime | NullableDateRange} value
@@ -143,6 +144,7 @@ const toWeekItem = (weekDayItems) => ({
 // Time constants
 const HOURS = numberRange(0, 24).map((hour) => [hour, String(hour)]);
 const MINUTES = numberRange(0, 60).map((minute) => [minute, String(minute || 0).padStart(2, "0")]);
+const SECONDS = [...MINUTES];
 const MERIDIEMS = ["AM", "PM"];
 
 /**
@@ -380,14 +382,19 @@ export class DateTimePicker extends Component {
         );
         this.availableHours = HOURS;
         this.availableMinutes = MINUTES.filter((minute) => !(minute[0] % props.rounding));
+        this.availableSeconds = props.rounding ? [] : SECONDS;
         this.allowedPrecisionLevels = this.filterPrecisionLevels(
             props.minPrecision,
             props.maxPrecision
         );
 
         this.additionalMonth = props.range && !this.env.isSmall;
-        this.maxDate = parseLimitDate(props.maxDate, MAX_VALID_DATE).endOf("day");
-        this.minDate = parseLimitDate(props.minDate, MIN_VALID_DATE).startOf("day");
+        this.maxDate = parseLimitDate(props.maxDate, MAX_VALID_DATE);
+        this.minDate = parseLimitDate(props.minDate, MIN_VALID_DATE);
+        if (this.props.type === "date") {
+            this.maxDate = this.maxDate.endOf("day");
+            this.minDate = this.minDate.startOf("day");
+        }
 
         if (this.maxDate < this.minDate) {
             throw new Error(`DateTimePicker error: given "maxDate" comes before "minDate".`);
diff --git a/addons/web/static/src/core/datetime/datetime_picker.xml b/addons/web/static/src/core/datetime/datetime_picker.xml
index 4d99bb29b0c..63555eeda9a 100644
--- a/addons/web/static/src/core/datetime/datetime_picker.xml
+++ b/addons/web/static/src/core/datetime/datetime_picker.xml
@@ -66,6 +66,13 @@
                                 <t t-set="unitIndex" t-value="1" />
                                 <t t-set="unitList" t-value="availableMinutes" />
                             </t>
+                            <t t-if="availableSeconds.length">
+                                <span>:</span>
+                                <t t-call="web.DateTimePicker.Select">
+                                    <t t-set="unitIndex" t-value="2" />
+                                    <t t-set="unitList" t-value="availableSeconds" />
+                                </t>
+                            </t>
                             <t t-if="meridiems">
                                 <t t-call="web.DateTimePicker.Select">
                                     <t t-set="unitIndex" t-value="3" />
diff --git a/addons/web/static/tests/core/datetime/datetime_picker_tests.js b/addons/web/static/tests/core/datetime/datetime_picker_tests.js
index 4710c4dcb3b..9968bce95cd 100644
--- a/addons/web/static/tests/core/datetime/datetime_picker_tests.js
+++ b/addons/web/static/tests/core/datetime/datetime_picker_tests.js
@@ -872,6 +872,23 @@ QUnit.module("Components", ({ beforeEach }) => {
         );
     });
 
+    QUnit.test("rounding=0 enables seconds picker", async (assert) => {
+        await mountPicker({
+            rounding: 0,
+        });
+
+        const [hourSelect, minuteSelect, secondsSelect] = getTimePickers().at(0);
+        assert.deepEqual(getTexts(hourSelect, "option"), range(24, String));
+        assert.deepEqual(
+            getTexts(minuteSelect, "option"),
+            range(60, (i) => pad2(i))
+        );
+        assert.deepEqual(
+            getTexts(secondsSelect, "option"),
+            range(60, (i) => pad2(i))
+        );
+    });
+
     QUnit.test("no value, select date without handler", async (assert) => {
         await mountPicker();
 
@@ -903,6 +920,86 @@ QUnit.module("Components", ({ beforeEach }) => {
         assert.verifySteps(["2023-04-25T18:00:00", "2023-04-25T18:05:00"]);
     });
 
+    QUnit.test("minDate with time: selecting out-of-range and in-range times", async (assert) => {
+        await mountPicker({
+            onSelect: (value) => assert.step(formatForStep(value)),
+            minDate: DateTime.fromISO("2023-04-25T16:00:00.000"),
+        });
+
+        const [hourSelect] = getTimePickers().at(0);
+        await editSelect(hourSelect, null, "15");
+        assert.verifySteps([]);
+        await editSelect(hourSelect, null, "16");
+        assert.verifySteps(["2023-04-25T16:00:00"]);
+    });
+
+    QUnit.test("maxDate with time: selecting out-of-range and in-range times", async (assert) => {
+        await mountPicker({
+            onSelect: (value) => assert.step(formatForStep(value)),
+            maxDate: DateTime.fromISO("2023-04-25T16:00:00.000"),
+        });
+
+        const [hourSelect] = getTimePickers().at(0);
+        await editSelect(hourSelect, null, "17");
+        assert.verifySteps([]);
+        await editSelect(hourSelect, null, "16");
+        assert.verifySteps(["2023-04-25T16:00:00"]);
+    });
+
+    QUnit.test(
+        "max and min date with time: selecting out-of-range and in-range times",
+        async (assert) => {
+            await mountPicker({
+                onSelect: (value) => assert.step(formatForStep(value)),
+                minDate: DateTime.fromISO("2023-04-25T16:00:00.000"),
+                maxDate: DateTime.fromISO("2023-04-25T16:00:00.000"),
+            });
+
+            const [hourSelect] = getTimePickers().at(0);
+            await editSelect(hourSelect, null, "15");
+            await editSelect(hourSelect, null, "17");
+            assert.verifySteps([]);
+            await editSelect(hourSelect, null, "16");
+            assert.verifySteps(["2023-04-25T16:00:00"]);
+        }
+    );
+
+    QUnit.test(
+        "max and min date with time: selecting invalid minutes and making it valid by selecting hours",
+        async (assert) => {
+            await mountPicker({
+                onSelect: (value) => assert.step(formatForStep(value)),
+                minDate: DateTime.fromISO("2023-04-25T16:10:00.000"),
+                maxDate: DateTime.fromISO("2023-04-25T16:50:00.000"),
+            });
+
+            const [hourSelect, minuteSelect] = getTimePickers().at(0);
+            await editSelect(hourSelect, null, "13");
+            await editSelect(minuteSelect, null, "30");
+            assert.verifySteps([]);
+            await editSelect(hourSelect, null, "16");
+            assert.verifySteps(["2023-04-25T16:30:00"]);
+        }
+    );
+
+    QUnit.test(
+        "max and min date with time: valid time on invalid day becomes valid when selecting day",
+        async (assert) => {
+            await mountPicker({
+                onSelect: (value) => assert.step(formatForStep(value)),
+                minDate: DateTime.fromISO("2023-04-24T16:10:00.000"),
+                maxDate: DateTime.fromISO("2023-04-24T16:50:00.000"),
+            });
+
+            const [hourSelect, minuteSelect] = getTimePickers().at(0);
+            await editSelect(hourSelect, null, "16");
+            await editSelect(minuteSelect, null, "30");
+            assert.verifySteps([]);
+            await click(getPickerCell("24"));
+            assert.verifySteps(["2023-04-24T16:30:00"]);
+        }
+    );
+
     QUnit.test("single value, select date", async (assert) => {
         await mountPicker({
             value: DateTime.fromObject({ day: 30, hour: 8, minute: 43 }),