diff --git a/src/controllers/installationController.js b/src/controllers/installationController.js
index cc03c824..9947bdf7 100644
--- a/src/controllers/installationController.js
+++ b/src/controllers/installationController.js
@@ -1793,7 +1793,7 @@ exports.getMasterSlaveSummary = async (req, reply) => {
         const diffInMinutes = now.diff(indiaTime, "minutes");
 
         gsmStatus = diffInMinutes <= 1 ? "connected" : "disconnected";
-        gsmLastCheckTime = now.format("DD-MM-YYYY HH:mm:ss");
+        gsmLastCheckTime =master.gsm_last_check_time;
 
         if (gsmStatus === "disconnected") {
           // Update disconnect time with latest disconnect timestamp
@@ -1827,7 +1827,7 @@ exports.getMasterSlaveSummary = async (req, reply) => {
         let connectedLoraTime = null;
         let loraStatus = "disconnected";
         let loraLastDisconnect = slave.lora_last_disconnect_time || null;
-        let loraLastCheckTime = now.format("DD-MM-YYYY HH:mm:ss");
+        let loraLastCheckTime = slave.lora_last_check_time;
         let tankHeight = null;
       
         // Fetch latest IotData for slave's hardwareId (NOT master's)