diff --git a/Libraries/LibWeb/HTML/Dates.cpp b/Libraries/LibWeb/HTML/Dates.cpp
index 0e3870515f0..574c14f9246 100644
--- a/Libraries/LibWeb/HTML/Dates.cpp
+++ b/Libraries/LibWeb/HTML/Dates.cpp
@@ -414,13 +414,16 @@ static Optional<HourMinuteSecond> parse_a_time_component(GenericLexer& input)
     if (!maybe_hour.has_value())
         return {};
     auto hour = maybe_hour.value();
+
     // 2. If hour is not a number in the range 0 ≤ hour ≤ 23, then fail.
     if (hour < 0 || hour > 23)
         return {};
+
     // 3. If position is beyond the end of input or if the character at position is not a U+003A COLON character, then
     //    fail. Otherwise, move position forwards one character.
     if (!input.consume_specific(':'))
         return {};
+
     // 4. Collect a sequence of code points that are ASCII digits from input given position. If the collected sequence
     //    is not exactly two characters long, then fail. Otherwise, interpret the resulting sequence as a base-ten integer.
     //    Let that number be the minute.
@@ -431,44 +434,50 @@ static Optional<HourMinuteSecond> parse_a_time_component(GenericLexer& input)
     if (!maybe_minute.has_value())
         return {};
     auto minute = maybe_minute.value();
+
     // 5. If minute is not a number in the range 0 ≤ minute ≤ 59, then fail.
     if (minute < 0 || hour > 59)
         return {};
+
     // 6. Let second be 0.
     i32 second = 0;
+
     // 7. If position is not beyond the end of input and the character at position is U+003A (:), then:
-    if (!input.consume_specific(':'))
-        return {};
-    // 7.1. Advance position to the next character in input.
-    // 7.2. If position is beyond the end of input, or at the last character in input, or if the next two characters in
-    //      input starting at position are not both ASCII digits, then fail.
-    if (input.is_eof() || input.tell_remaining() == 1 || (!is_ascii_digit(input.peek()) && !is_ascii_digit(input.peek(1))))
-        return {};
-    // 7.3. Collect a sequence of code points that are either ASCII digits or U+002E FULL STOP characters from input
-    //      given position.
-    auto second_string = input.consume_while([](auto ch) { return is_ascii_digit(ch) || ch == '.'; });
-    // If the collected sequence is three characters long, or if it is longer than three characters long and the third
-    // character is not a U+002E FULL STOP character, or if it has more than one U+002E FULL STOP character, then fail.
-    if (second_string.length() == 3)
-        return {};
-    if (second_string.length() > 3 && second_string[2] != '.')
-        return {};
-    if (second_string.find_all("."sv).size() > 1)
-        return {};
-    // Otherwise, interpret the resulting sequence as a base-ten number (possibly with a fractional part). Set second
-    // to that number.
-    // NB: The spec doesn't state requirements for what we must do with the fractional part of the second(s) string.
-    //     The spec neither requires that we separately preserve it nor requires that we completely discard it. If we
-    //     did have any reason at all to preserve it, we could parse the string into a float here. But there doesn't
-    //     seem to be any point in doing that, because there’s nothing in the corresponding calling algorithm(s) in the
-    //     spec that takes a milliseconds field and does anything with it anyway.
-    auto maybe_second = second_string.to_number<i32>();
-    if (!maybe_second.has_value())
-        return {};
-    second = maybe_second.value();
-    // 7.4. If second is not a number in the range 0 ≤ second < 60, then fail.
-    if (second < 0 || second > 60)
-        return {};
+    if (input.consume_specific(':')) {
+        // 1. Advance position to the next character in input.
+        // 2. If position is beyond the end of input, or at the last character in input, or if the next two characters in
+        //    input starting at position are not both ASCII digits, then fail.
+        if (input.is_eof() || input.tell_remaining() == 1 || (!is_ascii_digit(input.peek()) && !is_ascii_digit(input.peek(1))))
+            return {};
+
+        // 3. Collect a sequence of code points that are either ASCII digits or U+002E FULL STOP characters from input
+        //    given position.
+        auto second_string = input.consume_while([](auto ch) { return is_ascii_digit(ch) || ch == '.'; });
+        // If the collected sequence is three characters long, or if it is longer than three characters long and the third
+        // character is not a U+002E FULL STOP character, or if it has more than one U+002E FULL STOP character, then fail.
+        if (second_string.length() == 3)
+            return {};
+        if (second_string.length() > 3 && second_string[2] != '.')
+            return {};
+        if (second_string.find_all("."sv).size() > 1)
+            return {};
+        // Otherwise, interpret the resulting sequence as a base-ten number (possibly with a fractional part). Set second
+        // to that number.
+        // NB: The spec doesn't state requirements for what we must do with the fractional part of the second(s) string.
+        //     The spec neither requires that we separately preserve it nor requires that we completely discard it. If we
+        //     did have any reason at all to preserve it, we could parse the string into a float here. But there doesn't
+        //     seem to be any point in doing that, because there’s nothing in the corresponding calling algorithm(s) in the
+        //     spec that takes a milliseconds field and does anything with it anyway.
+        auto maybe_second = second_string.to_number<i32>();
+        if (!maybe_second.has_value())
+            return {};
+        second = maybe_second.value();
+
+        // 4. If second is not a number in the range 0 ≤ second < 60, then fail.
+        if (second < 0 || second > 60)
+            return {};
+    }
+
     // 8. Return hour, minute, and second.
     return HourMinuteSecond { hour, minute, second };
 }
diff --git a/Tests/LibWeb/Text/expected/HTML/HTMLInputElement-valueAsNumber.txt b/Tests/LibWeb/Text/expected/HTML/HTMLInputElement-valueAsNumber.txt
index ae462d52f55..77921fc7266 100644
--- a/Tests/LibWeb/Text/expected/HTML/HTMLInputElement-valueAsNumber.txt
+++ b/Tests/LibWeb/Text/expected/HTML/HTMLInputElement-valueAsNumber.txt
@@ -35,7 +35,7 @@ date did not throw: 0
 month did not throw: 100
 week did not throw: 345600000
 time did not throw: 0
-datetime-local did not throw: NaN
+datetime-local did not throw: 0
 color threw exception: InvalidStateError: valueAsNumber: Invalid input type used
 checkbox threw exception: InvalidStateError: valueAsNumber: Invalid input type used
 radio threw exception: InvalidStateError: valueAsNumber: Invalid input type used
diff --git a/Tests/LibWeb/Text/expected/wpt-import/html/semantics/forms/the-input-element/input-valueasnumber.txt b/Tests/LibWeb/Text/expected/wpt-import/html/semantics/forms/the-input-element/input-valueasnumber.txt
index edde99ed0dc..e85265e8ccd 100644
--- a/Tests/LibWeb/Text/expected/wpt-import/html/semantics/forms/the-input-element/input-valueasnumber.txt
+++ b/Tests/LibWeb/Text/expected/wpt-import/html/semantics/forms/the-input-element/input-valueasnumber.txt
@@ -2,8 +2,8 @@ Harness status: OK
 
 Found 60 tests
 
-56 Pass
-4 Fail
+58 Pass
+2 Fail
 Pass	valueAsNumber getter on type date (actual value: , expected valueAsNumber: NaN)
 Pass	valueAsNumber getter on type date (actual value: 0000-12-10, expected valueAsNumber: NaN)
 Pass	valueAsNumber getter on type date (actual value: 2019-00-12, expected valueAsNumber: NaN)
@@ -41,8 +41,8 @@ Pass	valueAsNumber setter on type time (actual valueAsNumber: 0, expected value:
 Pass	valueAsNumber setter on type time (actual valueAsNumber: 43200000, expected value: 12:00)
 Pass	valueAsNumber setter on type time (actual valueAsNumber: 86340000, expected value: 23:59)
 Pass	valueAsNumber getter on type datetime-local (actual value: , expected valueAsNumber: NaN)
-Fail	valueAsNumber getter on type datetime-local (actual value: 2019-12-10T00:00, expected valueAsNumber: 1575936000000)
-Fail	valueAsNumber getter on type datetime-local (actual value: 2019-12-10T12:00, expected valueAsNumber: 1575979200000)
+Pass	valueAsNumber getter on type datetime-local (actual value: 2019-12-10T00:00, expected valueAsNumber: 1575936000000)
+Pass	valueAsNumber getter on type datetime-local (actual value: 2019-12-10T12:00, expected valueAsNumber: 1575979200000)
 Pass	valueAsNumber setter on type datetime-local (actual valueAsNumber: 1575936000000, expected value: 2019-12-10T00:00)
 Pass	valueAsNumber setter on type datetime-local (actual valueAsNumber: 1575979200000, expected value: 2019-12-10T12:00)
 Pass	valueAsNumber getter on type number (actual value: , expected valueAsNumber: NaN)