diff --git a/pkg/constants/etna.go b/pkg/constants/etna.go
index a5d073da2..09aaa1afc 100644
--- a/pkg/constants/etna.go
+++ b/pkg/constants/etna.go
@@ -5,6 +5,8 @@ package constants
 import (
 	_ "embed"
 	"time"
+
+	avagoconstants "github.com/ava-labs/avalanchego/utils/constants"
 )
 
 //go:embed etnaDevnet/genesis.json
@@ -36,3 +38,8 @@ var (
 )
 
 const StakingEtnaMinimumDuration = 100 * time.Second
+
+var EtnaActivationTime = map[uint32]time.Time{
+	avagoconstants.FujiID: time.Date(2024, time.November, 25, 16, 0, 0, 0, time.UTC),
+	EtnaDevnetNetworkID:   time.Date(2024, time.October, 9, 20, 0, 0, 0, time.UTC),
+}
diff --git a/sdk/interchain/signature-aggregator.go b/sdk/interchain/signature-aggregator.go
index 951de2555..fdc997789 100644
--- a/sdk/interchain/signature-aggregator.go
+++ b/sdk/interchain/signature-aggregator.go
@@ -8,11 +8,12 @@ import (
 	"os"
 	"time"
 
+	"github.com/ava-labs/avalanche-cli/pkg/constants"
 	"github.com/ava-labs/avalanche-cli/pkg/models"
 	"github.com/ava-labs/avalanchego/api/info"
 	"github.com/ava-labs/avalanchego/ids"
 	"github.com/ava-labs/avalanchego/message"
-	"github.com/ava-labs/avalanchego/utils/constants"
+	avagoconstants "github.com/ava-labs/avalanchego/utils/constants"
 	"github.com/ava-labs/avalanchego/utils/logging"
 	"github.com/ava-labs/avalanchego/vms/platformvm/warp"
 	apiConfig "github.com/ava-labs/awm-relayer/config"
@@ -30,8 +31,6 @@ const (
 	DefaultSignatureCacheSize = uint64(1024 * 1024)
 )
 
-var etnaTime = time.Unix(0, 0)
-
 type SignatureAggregator struct {
 	subnetID         ids.ID
 	quorumPercentage uint64
@@ -87,6 +86,7 @@ func initSignatureAggregator(
 	registerer prometheus.Registerer,
 	subnetID ids.ID,
 	quorumPercentage uint64,
+	etnaTime time.Time,
 ) (*SignatureAggregator, error) {
 	sa := &SignatureAggregator{}
 	// set quorum percentage
@@ -101,8 +101,8 @@ func initSignatureAggregator(
 	messageCreator, err := message.NewCreator(
 		logger,
 		registerer,
-		constants.DefaultNetworkCompressionType,
-		constants.DefaultNetworkMaximumInboundTimeout,
+		avagoconstants.DefaultNetworkCompressionType,
+		avagoconstants.DefaultNetworkMaximumInboundTimeout,
 	)
 	if err != nil {
 		return nil, fmt.Errorf("failed to create message creator: %w", err)
@@ -153,7 +153,8 @@ func NewSignatureAggregator(
 			logging.JSON.ConsoleEncoder(),
 		),
 	)
-	return initSignatureAggregator(peerNetwork, logger, registerer, subnetID, quorumPercentage)
+	etnaTime := constants.EtnaActivationTime[network.ID]
+	return initSignatureAggregator(peerNetwork, logger, registerer, subnetID, quorumPercentage, etnaTime)
 }
 
 // AggregateSignatures aggregates signatures for a given message and justification.
diff --git a/sdk/interchain/signature-aggregator_test.go b/sdk/interchain/signature-aggregator_test.go
index a7ce6b219..2e28a5745 100644
--- a/sdk/interchain/signature-aggregator_test.go
+++ b/sdk/interchain/signature-aggregator_test.go
@@ -4,6 +4,7 @@ package interchain
 
 import (
 	"testing"
+	"time"
 
 	"github.com/ava-labs/avalanchego/ids"
 	"github.com/ava-labs/avalanchego/utils/logging"
@@ -29,6 +30,7 @@ func instantiateAggregator(t *testing.T) (
 		prometheus.DefaultRegisterer,
 		subnetID,
 		DefaultQuorumPercentage,
+		time.Time{},
 	)
 	require.Equal(t, err, nil)
 	return aggregator, mockNetwork, err