diff --git a/req_competition_fixtures.go b/req_competition_fixtures.go
index ac41957..c255da6 100644
--- a/req_competition_fixtures.go
+++ b/req_competition_fixtures.go
@@ -13,12 +13,28 @@ func (r CompetitionFixturesRequest) Matchday(matchday uint16) CompetitionFixture
 	return r
 }
 
-// TimeFrame modifies the request to specify a specific time frame.
+// TimeFrame modifies the request to specify a specific relative time frame.
 func (r CompetitionFixturesRequest) TimeFrame(timeframe time.Duration) CompetitionFixturesRequest {
 	r.urlValues.Set("timeFrame", durationToTimeFrame(timeframe))
 	return r
 }
 
+// TimeFrameStart modifies the request to specify the beginning of the time frame filter for the returned results.
+//
+// Only the year, month and day of the Time value will be used for the request.
+func (r CompetitionFixturesRequest) TimeFrameStart(date time.Time) CompetitionFixturesRequest {
+	r.urlValues.Set("timeFrameStart", date.Format(timeFrameLayout))
+	return r
+}
+
+// TimeFrameEnd modifies the request to specify the end of the time frame filter for the returned results.
+//
+// Only the year, month and day of the Time value will be used for the request.
+func (r CompetitionFixturesRequest) TimeFrameStart(date time.Time) CompetitionFixturesRequest {
+	r.urlValues.Set("timeFrameEnd", date.Format(timeFrameLayout))
+	return r
+}
+
 // Do executes the request.
 func (r CompetitionFixturesRequest) Do() (s FixtureList, err error) {
 	d, _, err := r.doJson("GET")
diff --git a/req_fixtures.go b/req_fixtures.go
index b51af64..54eadbd 100644
--- a/req_fixtures.go
+++ b/req_fixtures.go
@@ -7,12 +7,28 @@ import (
 
 type FixturesRequest struct{ request }
 
-// TimeFrame modifies the request to specify a specific time frame.
+// TimeFrame modifies the request to specify a specific relative time frame.
 func (r FixturesRequest) TimeFrame(timeframe time.Duration) FixturesRequest {
 	r.urlValues.Set("timeFrame", durationToTimeFrame(timeframe))
 	return r
 }
 
+// TimeFrameStart modifies the request to specify the beginning of the time frame filter for the returned results.
+//
+// Only the year, month and day of the Time value will be used for the request.
+func (r FixturesRequest) TimeFrameStart(date time.Time) FixturesRequest {
+	r.urlValues.Set("timeFrameStart", date.Format(timeFrameLayout))
+	return r
+}
+
+// TimeFrameEnd modifies the request to specify the end of the time frame filter for the returned results.
+//
+// Only the year, month and day of the Time value will be used for the request.
+func (r FixturesRequest) TimeFrameStart(date time.Time) FixturesRequest {
+	r.urlValues.Set("timeFrameEnd", date.Format(timeFrameLayout))
+	return r
+}
+
 // League modifies the request to specify a list of leagues by their code.
 func (r FixturesRequest) League(leagueCodes ...string) FixturesRequest {
 	r.urlValues.Set("league", strings.Join(leagueCodes, ","))
diff --git a/util.go b/util.go
index 4b42cae..ebd1739 100644
--- a/util.go
+++ b/util.go
@@ -8,6 +8,8 @@ import (
 const (
 	day  = 24 * time.Hour
 	week = 7 * day
+
+	timeFrameLayout = "2006-01-02"
 )
 
 func durationToTimeFrame(d time.Duration) (r string) {