[node] Add statement on NTP requirement (#958)

Author: ibalajiarun

apps/nextra/pages/en/network/nodes/validator-node/node-requirements.mdx

@@ -168,3 +168,11 @@ port and the admin service port should never be exposed publicly as they can be
 to expose the REST API endpoint publicly, you should deploy an additional authentication or rate-limiting mechanism to
 prevent abuse.
 </Callout>
+
+## Software Requirements
+
+### Time Service
+
+It is highly recommended to enable system clock synchronization using a Network Time Protocol (NTP) service.
+Accurate timekeeping ensures that nodes participate in consensus promptly and remain synchronized with the rest of the network.
+Failure to maintain consistent system time may cause nodes to lag behind and validators may even fail to propose blocks.