diff --git a/data/types/settings/pump/sleep_schedule.go b/data/types/settings/pump/sleep_schedule.go
index 0da251b14..a3858bcb7 100644
--- a/data/types/settings/pump/sleep_schedule.go
+++ b/data/types/settings/pump/sleep_schedule.go
@@ -46,7 +46,14 @@ func (s *SleepScheduleMap) Validate(validator structure.Validator) {
 	}
 }
 
-func (s *SleepScheduleMap) Normalize(normalizer data.Normalizer) {}
+func (s *SleepScheduleMap) Normalize(normalizer data.Normalizer) {
+	for _, name := range s.sortedNames() {
+		datumNormalizer := normalizer.WithReference(name)
+		if datum := s.Get(name); datum != nil {
+			datum.Normalize(datumNormalizer)
+		}
+	}
+}
 
 func (s *SleepScheduleMap) Get(name string) *SleepSchedule {
 	if datum, exists := (*s)[name]; exists {
@@ -106,4 +113,8 @@ func (s *SleepSchedule) Validate(validator structure.Validator) {
 	}
 }
 
-func (s *SleepSchedule) Normalize(normalizer data.Normalizer) {}
+func (s *SleepSchedule) Normalize(normalizer data.Normalizer) {
+	if s.Days != nil {
+		sort.Sort(common.DaysOfWeekByDayIndex(*s.Days))
+	}
+}
diff --git a/dexcom/alert_schedule.go b/dexcom/alert_schedule.go
index 6236455f7..68048c9b6 100644
--- a/dexcom/alert_schedule.go
+++ b/dexcom/alert_schedule.go
@@ -6,6 +6,7 @@ import (
 	"strings"
 	"time"
 
+	dataTypesCommon "github.com/tidepool-org/platform/data/types/common"
 	dataTypesSettingsCgm "github.com/tidepool-org/platform/data/types/settings/cgm"
 	"github.com/tidepool-org/platform/errors"
 	"github.com/tidepool-org/platform/pointer"
@@ -17,13 +18,13 @@ const (
 	AlertScheduleSettingsStartTimeDefault = "00:00"
 	AlertScheduleSettingsEndTimeDefault   = "00:00"
 
-	AlertScheduleSettingsDaySunday    = "sunday"
-	AlertScheduleSettingsDayMonday    = "monday"
-	AlertScheduleSettingsDayTuesday   = "tuesday"
-	AlertScheduleSettingsDayWednesday = "wednesday"
-	AlertScheduleSettingsDayThursday  = "thursday"
-	AlertScheduleSettingsDayFriday    = "friday"
-	AlertScheduleSettingsDaySaturday  = "saturday"
+	AlertScheduleSettingsDaySunday    = dataTypesCommon.DaySunday
+	AlertScheduleSettingsDayMonday    = dataTypesCommon.DayMonday
+	AlertScheduleSettingsDayTuesday   = dataTypesCommon.DayTuesday
+	AlertScheduleSettingsDayWednesday = dataTypesCommon.DayWednesday
+	AlertScheduleSettingsDayThursday  = dataTypesCommon.DayThursday
+	AlertScheduleSettingsDayFriday    = dataTypesCommon.DayFriday
+	AlertScheduleSettingsDaySaturday  = dataTypesCommon.DaySaturday
 
 	AlertScheduleSettingsOverrideModeUnknown = "unknown"
 	AlertScheduleSettingsOverrideModeQuiet   = "quiet"
@@ -95,27 +96,6 @@ func AlertScheduleSettingsOverrideModes() []string {
 	}
 }
 
-func AlertScheduleSettingsDayIndex(day string) int {
-	switch day {
-	case AlertScheduleSettingsDaySunday:
-		return 1
-	case AlertScheduleSettingsDayMonday:
-		return 2
-	case AlertScheduleSettingsDayTuesday:
-		return 3
-	case AlertScheduleSettingsDayWednesday:
-		return 4
-	case AlertScheduleSettingsDayThursday:
-		return 5
-	case AlertScheduleSettingsDayFriday:
-		return 6
-	case AlertScheduleSettingsDaySaturday:
-		return 7
-	default:
-		return 0
-	}
-}
-
 func AlertSettingAlertNames() []string {
 	return []string{
 		AlertSettingAlertNameUnknown,
@@ -410,7 +390,7 @@ func (a *AlertScheduleSettings) Validate(validator structure.Validator) {
 
 func (a *AlertScheduleSettings) Normalize(normalizer structure.Normalizer) {
 	if a.DaysOfWeek != nil {
-		sort.Sort(DaysOfWeekByAlertScheduleSettingsDayIndex(*a.DaysOfWeek))
+		sort.Sort(dataTypesCommon.DaysOfWeekByDayIndex(*a.DaysOfWeek))
 	}
 }
 
@@ -418,19 +398,6 @@ func (a *AlertScheduleSettings) IsDefault() bool {
 	return a.Default != nil && *a.Default
 }
 
-type DaysOfWeekByAlertScheduleSettingsDayIndex []string
-
-func (d DaysOfWeekByAlertScheduleSettingsDayIndex) Len() int {
-	return len(d)
-}
-func (d DaysOfWeekByAlertScheduleSettingsDayIndex) Swap(i int, j int) {
-	d[i], d[j] = d[j], d[i]
-}
-
-func (d DaysOfWeekByAlertScheduleSettingsDayIndex) Less(i int, j int) bool {
-	return AlertScheduleSettingsDayIndex(d[i]) < AlertScheduleSettingsDayIndex(d[j])
-}
-
 type AlertSettings []*AlertSetting
 
 func ParseAlertSettings(parser structure.ArrayParser) *AlertSettings {
diff --git a/dexcom/alert_schedule_test.go b/dexcom/alert_schedule_test.go
index 9b9ddef3b..535f569e8 100644
--- a/dexcom/alert_schedule_test.go
+++ b/dexcom/alert_schedule_test.go
@@ -120,23 +120,6 @@ var _ = Describe("Alert", func() {
 		}))
 	})
 
-	Context("AlertScheduleSettingsDayIndex", func() {
-		DescribeTable("return the expected index when the day",
-			func(day string, expectedIndex int) {
-				Expect(dexcom.AlertScheduleSettingsDayIndex(day)).To(Equal(expectedIndex))
-			},
-			Entry("is an empty string", "", 0),
-			Entry("is sunday", "sunday", 1),
-			Entry("is monday", "monday", 2),
-			Entry("is tuesday", "tuesday", 3),
-			Entry("is wednesday", "wednesday", 4),
-			Entry("is thursday", "thursday", 5),
-			Entry("is friday", "friday", 6),
-			Entry("is saturday", "saturday", 7),
-			Entry("is an invalid string", "invalid", 0),
-		)
-	})
-
 	It("AlertSettingAlertNames returns expected", func() {
 		Expect(dexcom.AlertSettingAlertNames()).To(Equal([]string{"unknown", "fall", "high", "low", "noReadings", "outOfRange", "rise", "urgentLow", "urgentLowSoon", "fixedLow"}))
 		Expect(dexcom.AlertSettingAlertNames()).To(Equal([]string{