diff --git a/swh/search/query_language/grammar.js b/swh/search/query_language/grammar.js
--- a/swh/search/query_language/grammar.js
+++ b/swh/search/query_language/grammar.js
@@ -122,9 +122,9 @@
         isoDateTime: $ => {
             const dateRegex = (/\d{4}[-]\d{2}[-]\d{2}/).source
             const dateTimeSepRegex = (/(\s|T)*/).source
-            const timeRegex = (/(\d{2}:\d{2}(:\d{2}(\.\d{6})?)?)?/).source
-            const timezoneRegex = (/(\+\d{2}:\d{2}|Z)?/).source
-            return new RegExp(dateRegex + dateTimeSepRegex + timeRegex + timezoneRegex)
+            const timeRegex = (/\d{2}:\d{2}(:\d{2}(\.\d{6})?)?/).source
+            const timezoneRegex = (/\+\d{2}:\d{2}|Z/).source
+            return new RegExp(`${dateRegex}(${dateTimeSepRegex}${timeRegex}(${timezoneRegex})?)?`)
         },
 
         string: $ => choice(wrapWith($.stringContent, ["'", '"']), $.singleWord),
diff --git a/swh/search/tests/test_elasticsearch.py b/swh/search/tests/test_elasticsearch.py
--- a/swh/search/tests/test_elasticsearch.py
+++ b/swh/search/tests/test_elasticsearch.py
@@ -17,15 +17,15 @@
 from .test_search import CommonSearchTest
 
 now = datetime.now(tz=timezone.utc).isoformat()
-now_minus_5_hours = (datetime.now(tz=timezone.utc) - timedelta(hours=5)).isoformat()
-now_plus_5_hours = (datetime.now(tz=timezone.utc) + timedelta(hours=5)).isoformat()
+now_minus_5_days = (datetime.now(tz=timezone.utc) - timedelta(days=5)).isoformat()
+now_plus_5_days = (datetime.now(tz=timezone.utc) + timedelta(days=5)).isoformat()
 
 ORIGINS = [
     {
         "url": "http://foobar.1.com",
         "nb_visits": 1,
-        "last_visit_date": now_minus_5_hours,
-        "last_eventful_visit_date": now_minus_5_hours,
+        "last_visit_date": now_minus_5_days,
+        "last_eventful_visit_date": now_minus_5_days,
     },
     {
         "url": "http://foobar.2.com",
@@ -36,14 +36,14 @@
     {
         "url": "http://foobar.3.com",
         "nb_visits": 3,
-        "last_visit_date": now_plus_5_hours,
-        "last_eventful_visit_date": now_minus_5_hours,
+        "last_visit_date": now_plus_5_days,
+        "last_eventful_visit_date": now_minus_5_days,
     },
     {
         "url": "http://barbaz.4.com",
         "nb_visits": 3,
-        "last_visit_date": now_plus_5_hours,
-        "last_eventful_visit_date": now_minus_5_hours,
+        "last_visit_date": now_plus_5_days,
+        "last_eventful_visit_date": now_minus_5_days,
     },
 ]
 
@@ -184,6 +184,58 @@
             "http://foobar.3.com",
         }
 
+    def test_search_ql_datetimes(self):
+        self.search.origin_update(ORIGINS)
+        self.search.flush()
+
+        now_minus_5_minutes = (
+            datetime.now(tz=timezone.utc) - timedelta(minutes=5)
+        ).isoformat()
+        now_plus_5_minutes = (
+            datetime.now(tz=timezone.utc) + timedelta(minutes=5)
+        ).isoformat()
+
+        results = {
+            r["url"]
+            for r in self.search.origin_search(
+                query=(
+                    f"last_visit < {now_minus_5_minutes} "
+                    f"or last_visit > {now_plus_5_minutes}"
+                )
+            ).results
+        }
+        assert results == {
+            "http://foobar.1.com",
+            "http://foobar.3.com",
+            "http://barbaz.4.com",
+        }
+
+    def test_search_ql_dates(self):
+        self.search.origin_update(ORIGINS)
+        self.search.flush()
+
+        now_minus_2_days = (
+            (datetime.now(tz=timezone.utc) - timedelta(days=2)).date().isoformat()
+        )
+        now_plus_2_days = (
+            (datetime.now(tz=timezone.utc) + timedelta(days=2)).date().isoformat()
+        )
+
+        results = {
+            r["url"]
+            for r in self.search.origin_search(
+                query=(
+                    f"last_visit < {now_minus_2_days} "
+                    f"or last_visit > {now_plus_2_days}"
+                )
+            ).results
+        }
+        assert results == {
+            "http://foobar.1.com",
+            "http://foobar.3.com",
+            "http://barbaz.4.com",
+        }
+
     def test_search_ql_visited(self):
         self.search.origin_update(
             [
@@ -191,8 +243,8 @@
                     "url": "http://foobar.1.com",
                     "has_visits": True,
                     "nb_visits": 1,
-                    "last_visit_date": now_minus_5_hours,
-                    "last_eventful_visit_date": now_minus_5_hours,
+                    "last_visit_date": now_minus_5_days,
+                    "last_eventful_visit_date": now_minus_5_days,
                 },
                 {"url": "http://foobar.2.com",},
                 {"url": "http://foobar.3.com", "has_visits": False,},
diff --git a/swh/search/tests/test_translator.py b/swh/search/tests/test_translator.py
--- a/swh/search/tests/test_translator.py
+++ b/swh/search/tests/test_translator.py
@@ -306,6 +306,22 @@
     _test_results(query, expected)
 
 
+def test_visit_date_range():
+    query = "last_visit >= 2020-01-01 and last_visit < 2021-01-01"
+    expected = {
+        "filters": {
+            "bool": {
+                "must": [
+                    {"range": {"last_visit_date": {"gte": "2020-01-01"}}},
+                    {"range": {"last_visit_date": {"lt": "2021-01-01"}}},
+                ]
+            }
+        },
+    }
+
+    _test_results(query, expected)
+
+
 def test_last_eventful_visit_not_equal_to_filter():
     query = "last_visit != 2020-01-01"
     expected = {