diff --git a/dmdiagnostics.c b/dmdiagnostics.c
index dcd1cb82..d37b349c 100644
--- a/dmdiagnostics.c
+++ b/dmdiagnostics.c
@@ -90,8 +90,8 @@ static void send_transfer_complete_event(const char *command, const char *obj_pa
 	char fault_string[128] = {0};
 	unsigned fault_code = 0;
 
-	strftime(start_time, sizeof(start_time), "%Y-%m-%dT%H:%M:%SZ", localtime(&start_t));
-	strftime(complete_time, sizeof(complete_time), "%Y-%m-%dT%H:%M:%SZ", localtime(&complete_t));
+	strftime(start_time, sizeof(start_time), "%Y-%m-%dT%H:%M:%SZ", gmtime(&start_t));
+	strftime(complete_time, sizeof(complete_time), "%Y-%m-%dT%H:%M:%SZ", gmtime(&complete_t));
 
 	if (!get_response_code_status(transfer_url, res_code)) {
 		fault_code = USP_FAULT_GENERAL_FAILURE;
diff --git a/dmtree/tr104/servicesvoiceservicesip.c b/dmtree/tr104/servicesvoiceservicesip.c
index f0e64a89..85789ab4 100644
--- a/dmtree/tr104/servicesvoiceservicesip.c
+++ b/dmtree/tr104/servicesvoiceservicesip.c
@@ -392,7 +392,7 @@ static int get_ServicesVoiceServiceSIPClientContact_ExpireTime(char *refparam, s
 						}
 						time_expires = time_last + period;
 
-						if (strftime(buf, sizeof(buf), "%Y-%m-%dT%H:%M:%SZ", localtime(&time_expires)) == 0)
+						if (strftime(buf, sizeof(buf), "%Y-%m-%dT%H:%M:%SZ", gmtime(&time_expires)) == 0)
 							return -1;
 
 						*value = dmstrdup(buf);
diff --git a/dmtree/tr181/deviceinfo.c b/dmtree/tr181/deviceinfo.c
index 92aeac34..c1be9a75 100644
--- a/dmtree/tr181/deviceinfo.c
+++ b/dmtree/tr181/deviceinfo.c
@@ -313,7 +313,7 @@ static int get_vcf_date(char *refparam, struct dmctx *ctx, void *data, char *ins
 
 				snprintf(path, sizeof(path), "%s%s", DEFAULT_CONFIG_DIR, d_file->d_name);
 				stat(path, &attr);
-				strftime(date, sizeof(date), "%Y-%m-%dT%H:%M:%SZ", localtime(&attr.st_mtime));
+				strftime(date, sizeof(date), "%Y-%m-%dT%H:%M:%SZ", gmtime(&attr.st_mtime));
 				*value = dmstrdup(date);
 			}
 		}
diff --git a/dmtree/tr181/dhcpv4.c b/dmtree/tr181/dhcpv4.c
index 139f6280..1e3bd53c 100644
--- a/dmtree/tr181/dhcpv4.c
+++ b/dmtree/tr181/dhcpv4.c
@@ -1714,7 +1714,7 @@ static int get_DHCPv4ServerPoolClientIPv4Address_LeaseTimeRemaining(char *refpar
 {
 	const struct client_args *args = data;
 
-	return dm_time_format(args->lease->ts, value);
+	return dm_time_utc_format(args->lease->ts, value);
 }
 
 static int get_DHCPv4ServerPoolClientIPv4Address_IPAddress(char *refparam, struct dmctx *ctx, void *data, char *instance, char **value)
diff --git a/dmtree/tr181/dhcpv6.c b/dmtree/tr181/dhcpv6.c
index 60556682..6f82b347 100644
--- a/dmtree/tr181/dhcpv6.c
+++ b/dmtree/tr181/dhcpv6.c
@@ -60,7 +60,7 @@ static int get_value_in_date_time_format(json_object *json_obj, char *option_nam
 	if (option_value && *option_value != '\0' && atoi(option_value) > 0) {
 		time_t time_value = atoi(option_value);
 		char s_now[sizeof "AAAA-MM-JJTHH:MM:SSZ"];
-		if (strftime(s_now, sizeof s_now, "%Y-%m-%dT%H:%M:%SZ", localtime(&time_value)) == 0)
+		if (strftime(s_now, sizeof s_now, "%Y-%m-%dT%H:%M:%SZ", gmtime(&time_value)) == 0)
 			return -1;
 		*value = dmstrdup(s_now); // MEM WILL BE FREED IN DMMEMCLEAN
 	}
@@ -1081,7 +1081,7 @@ static int get_DHCPv6ServerPoolClientIPv6Prefix_PreferredLifetime(char *refparam
 	if (preferred && *preferred != '\0' && atoi(preferred) > 0) {
 		time_t time_value = atoi(preferred);
 		char s_now[sizeof "AAAA-MM-JJTHH:MM:SSZ"];
-		if (strftime(s_now, sizeof s_now, "%Y-%m-%dT%H:%M:%SZ", localtime(&time_value)) == 0)
+		if (strftime(s_now, sizeof s_now, "%Y-%m-%dT%H:%M:%SZ", gmtime(&time_value)) == 0)
 			return -1;
 		*value = dmstrdup(s_now); // MEM WILL BE FREED IN DMMEMCLEAN
 	}
@@ -1097,7 +1097,7 @@ static int get_DHCPv6ServerPoolClientIPv6Prefix_ValidLifetime(char *refparam, st
 	if (valid && *valid != '\0' && atoi(valid) > 0) {
 		time_t time_value = atoi(valid);
 		char s_now[sizeof "AAAA-MM-JJTHH:MM:SSZ"];
-		if (strftime(s_now, sizeof s_now, "%Y-%m-%dT%H:%M:%SZ", localtime(&time_value)) == 0)
+		if (strftime(s_now, sizeof s_now, "%Y-%m-%dT%H:%M:%SZ", gmtime(&time_value)) == 0)
 			return -1;
 		*value = dmstrdup(s_now);
 	}
diff --git a/dmtree/tr181/dynamicdns.c b/dmtree/tr181/dynamicdns.c
index c876909e..e294f577 100644
--- a/dmtree/tr181/dynamicdns.c
+++ b/dmtree/tr181/dynamicdns.c
@@ -689,7 +689,7 @@ static int get_DynamicDNSClientHostname_LastUpdate(char *refparam, struct dmctx
 		uptime = "0";
 
 	epoch_time = now - atoi(uptime) + atoi(last_time);
-	if ((ts = localtime(&epoch_time)) == NULL)
+	if ((ts = gmtime(&epoch_time)) == NULL)
 		return -1;
 
 	if (strftime(current_time, sizeof(current_time), "%Y-%m-%dT%H:%M:%SZ", ts) == 0)
diff --git a/dmtree/tr181/ip.c b/dmtree/tr181/ip.c
index 32f0d906..0677ba36 100644
--- a/dmtree/tr181/ip.c
+++ b/dmtree/tr181/ip.c
@@ -2052,7 +2052,7 @@ static int get_IPInterfaceIPv6Address_PreferredLifetime(char *refparam, struct d
 	else
 		preferred = dmjson_get_value(((struct intf_ip_args *)data)->interface_obj, 1, "preferred");
 
-	if (preferred && *preferred && get_shift_time_time(atoi(preferred), local_time, sizeof(local_time)) == -1)
+	if (preferred && *preferred && get_shift_utc_time(atoi(preferred), local_time, sizeof(local_time)) == -1)
 		return 0;
 
 	*value = (*local_time) ? dmstrdup(local_time) : "9999-12-31T23:59:59Z";
@@ -2082,7 +2082,7 @@ static int get_IPInterfaceIPv6Address_ValidLifetime(char *refparam, struct dmctx
 	else
 		preferred = dmjson_get_value(((struct intf_ip_args *)data)->interface_obj, 1, "valid");
 
-	if (preferred && *preferred && get_shift_time_time(atoi(preferred), local_time, sizeof(local_time)) == -1)
+	if (preferred && *preferred && get_shift_utc_time(atoi(preferred), local_time, sizeof(local_time)) == -1)
 		return 0;
 
 	*value = (*local_time) ? dmstrdup(local_time) : "9999-12-31T23:59:59Z";
@@ -2265,7 +2265,7 @@ static int get_IPInterfaceIPv6Prefix_PreferredLifetime(char *refparam, struct dm
 	char local_time[32] = {0};
 
 	char *preferred = dmjson_get_value(((struct intf_ip_args *)data)->interface_obj, 1, "preferred");
-	if (preferred && *preferred && get_shift_time_time(atoi(preferred), local_time, sizeof(local_time)) == -1)
+	if (preferred && *preferred && get_shift_utc_time(atoi(preferred), local_time, sizeof(local_time)) == -1)
 		return 0;
 
 	*value = (*local_time) ? dmstrdup(local_time) : "9999-12-31T23:59:59Z";
diff --git a/dmtree/tr181/routing.c b/dmtree/tr181/routing.c
index 18ebf6be..31fadd8e 100644
--- a/dmtree/tr181/routing.c
+++ b/dmtree/tr181/routing.c
@@ -942,7 +942,7 @@ static int get_RoutingRouteInformationInterfaceSetting_RouteLifetime(char *refpa
 	if (valid && *valid != '\0' && atoi(valid) > 0) {
 		char local_time[32] = {0};
 
-		if (get_shift_time_time(atoi(valid), local_time, sizeof(local_time)) == -1)
+		if (get_shift_utc_time(atoi(valid), local_time, sizeof(local_time)) == -1)
 			return 0;
 		*value = dmstrdup(local_time);
 	}
diff --git a/dmtree/tr181/security.c b/dmtree/tr181/security.c
index 5609a4a5..a7d05a22 100644
--- a/dmtree/tr181/security.c
+++ b/dmtree/tr181/security.c
@@ -331,7 +331,7 @@ static int get_SecurityCertificate_LastModif(char *refparam, struct dmctx *ctx,
 	struct stat b;
 	char t[sizeof("AAAA-MM-JJTHH:MM:SSZ")] = "0001-01-01T00:00:00Z";
 	if (!stat(cert_profile->path, &b))
-		strftime(t, sizeof(t), "%Y-%m-%dT%H:%M:%SZ", localtime(&b.st_mtime));
+		strftime(t, sizeof(t), "%Y-%m-%dT%H:%M:%SZ", gmtime(&b.st_mtime));
 	*value = dmstrdup(t);
 	return 0;
 }
diff --git a/dmtree/tr181/wifi.c b/dmtree/tr181/wifi.c
index 17f77e88..0e885b12 100644
--- a/dmtree/tr181/wifi.c
+++ b/dmtree/tr181/wifi.c
@@ -2709,15 +2709,15 @@ static int get_WiFiAccessPointAssociatedDevice_AssociationTime(char *refparam, s
 	char *in_network = dmjson_get_value((json_object *)data, 1, "in_network");
 	if (in_network && *in_network != '\0' && atoi(in_network) > 0) {
 		time_t t_time = time(NULL) - atoi(in_network);
-		if (localtime(&t_time) == NULL)
+		if (gmtime(&t_time) == NULL)
 			return -1;
 
-		char local_time[32] = {0};
+		char utc_time[32] = {0};
 
-		if (strftime(local_time, sizeof(local_time), "%Y-%m-%dT%H:%M:%SZ", localtime(&t_time)) == 0)
+		if (strftime(utc_time, sizeof(utc_time), "%Y-%m-%dT%H:%M:%SZ", gmtime(&t_time)) == 0)
 			return -1;
 
-		*value = dmstrdup(local_time);
+		*value = dmstrdup(utc_time);
 	}
 	return 0;
 }
diff --git a/libbbf_api/dmcommon.c b/libbbf_api/dmcommon.c
index a1bec7f7..a9e51787 100644
--- a/libbbf_api/dmcommon.c
+++ b/libbbf_api/dmcommon.c
@@ -931,6 +931,22 @@ bool elt_exists_in_array(char **str_array, char *str, int length)
 	return false;
 }
 
+int get_shift_utc_time(int shift_time, char *utc_time, int size)
+{
+	struct tm *t_tm;
+	time_t now = time(NULL);
+
+	now = now + shift_time;
+	t_tm = gmtime(&now);
+	if (t_tm == NULL)
+		return -1;
+
+	if (strftime(utc_time, size, "%Y-%m-%dT%H:%M:%SZ", t_tm) == 0)
+		return -1;
+
+	return 0;
+}
+
 int get_shift_time_time(int shift_time, char *local_time, int size)
 {
 	time_t t_time;
@@ -1047,6 +1063,24 @@ int get_net_iface_sysfs(const char *uci_iface, const char *name, char **value)
 	return get_net_device_sysfs(device, name, value);
 }
 
+int dm_time_utc_format(time_t ts, char **dst)
+{
+	char time_buf[32] = { 0, 0 };
+	struct tm *t_tm;
+
+	*dst = "0001-01-01T00:00:00Z";
+
+	t_tm = gmtime(&ts);
+	if (t_tm == NULL)
+		return -1;
+
+	if(strftime(time_buf, sizeof(time_buf), "%Y-%m-%dT%H:%M:%SZ", t_tm) == 0)
+		return -1;
+
+	*dst = dmstrdup(time_buf);
+	return 0;
+}
+
 int dm_time_format(time_t ts, char **dst)
 {
 	char time_buf[32] = { 0, 0 };