Default timezone to India; switch rate calendar to range API

src/main/kotlin/com/android/trisolarisserver/TrisolarisServerApplication.kt

@@ -3,11 +3,13 @@ package com.android.trisolarisserver
 import org.springframework.boot.autoconfigure.SpringBootApplication
 import org.springframework.boot.runApplication
 import org.springframework.scheduling.annotation.EnableScheduling
+import java.util.TimeZone
 
 @SpringBootApplication
 @EnableScheduling
 class TrisolarisServerApplication
 
 fun main(args: Array<String>) {
+    TimeZone.setDefault(TimeZone.getTimeZone("Asia/Kolkata"))
     runApplication<TrisolarisServerApplication>(*args)
 }