diff --git a/Sources/ObjC/RSDateParser.m b/Sources/ObjC/RSDateParser.m
index cb9c572..3eced11 100755
--- a/Sources/ObjC/RSDateParser.m
+++ b/Sources/ObjC/RSDateParser.m
@@ -389,6 +389,9 @@ static NSInteger parsedTimeZoneOffset(const char *bytes, NSUInteger numberOfByte
 	if (hasMilliseconds) {
 		milliseconds = nextNumericValue(bytes, numberOfBytes, currentIndex, 3, &finalIndex);
 		currentIndex = finalIndex + 1;
+
+		// Igore more than 3 digits for fraction of a second
+		while (currentIndex < numberOfBytes && isdigit(bytes[currentIndex])) currentIndex++;
 	}
 
 	timeZoneOffset = parsedTimeZoneOffset(bytes, numberOfBytes, currentIndex);
diff --git a/Tests/RSParserTests/RSDateParserTests.swift b/Tests/RSParserTests/RSDateParserTests.swift
index c52310a..50bbaba 100644
--- a/Tests/RSParserTests/RSDateParserTests.swift
+++ b/Tests/RSParserTests/RSDateParserTests.swift
@@ -11,7 +11,7 @@ import RSParser
 
 class RSDateParserTests: XCTestCase {
 	
-	static func dateWithValues(_ year: Int, _ month: Int, _ day: Int, _ hour: Int, _ minute: Int, _ second: Int) -> Date {
+	static func dateWithValues(_ year: Int, _ month: Int, _ day: Int, _ hour: Int, _ minute: Int, _ second: Int, _ milliseconds: Int = 0) -> Date {
 		var dateComponents = DateComponents()
 		dateComponents.calendar = Calendar.current
 		dateComponents.timeZone = TimeZone(secondsFromGMT: 0)
@@ -22,6 +22,7 @@ class RSDateParserTests: XCTestCase {
 		dateComponents.hour = hour
 		dateComponents.minute = minute
 		dateComponents.second = second
+		dateComponents.nanosecond = milliseconds * 1000000
 		
 		return dateComponents.date!
 	}
@@ -100,9 +101,9 @@ class RSDateParserTests: XCTestCase {
 		XCTAssertEqual(d, expectedDateResult)
 	}
 
-//	func testHighMillisecondDate() {
-//		let expectedDateResult = Self.dateWithValues(2021, 03, 29, 10, 46, 56)
-//		let d = RSDateWithString("2021-03-29T10:46:56.516941+00:00")
-//		XCTAssertEqual(d, expectedDateResult)
-//	}
+	func testHighMillisecondDate() {
+		let expectedDateResult = Self.dateWithValues(2021, 03, 29, 10, 46, 56, 516)
+		let d = RSDateWithString("2021-03-29T10:46:56.516941+00:00")
+		XCTAssertEqual(d!.timeIntervalSince1970, expectedDateResult.timeIntervalSince1970, accuracy: 0.000001)
+	}
 }