Invalidated the next and prev nav buttons for the calender component when compared to a new valid date range state withing the calender context.

components/calender/CalenderNav.tsx

@@ -2,12 +2,13 @@ import React, { useContext } from "react";
 import { useRouter } from "next/router";
 import { HStack, IconButton } from "@chakra-ui/react";
 import { Icon } from "@iconify/react";
-import { sub, add, format } from "date-fns";
+import { sub, add, format, isSameMonth } from "date-fns";
 import DatePicker from "./DatePicker";
 import { CalenderContext } from "../../contexts/CalenderContext";
 
 const CalenderNav = (): JSX.Element => {
-  const { selectedDate } = useContext(CalenderContext);
+  const { selectedDate, validDateRange } = useContext(CalenderContext);
+  const { start: validStart, end: validEnd } = validDateRange;
 
   const router = useRouter();
 
@@ -43,12 +44,14 @@ const CalenderNav = (): JSX.Element => {
   return (
     <HStack spacing={10} as="nav" w="auto" h="10vh" textAlign="center">
       <IconButton
+        isDisabled={isSameMonth(selectedDate, validStart)}
         aria-label="Previous Month"
         icon={<Icon icon="akar-icons:chevron-left" />}
         onClick={() => handleNavButtons("prev")}
       />
       <DatePicker />
       <IconButton
+        isDisabled={isSameMonth(selectedDate, validEnd)}
         aria-label="Next Month"
         icon={<Icon icon="akar-icons:chevron-right" />}
         onClick={() => handleNavButtons("next")}