diff --git a/task-1/book.js b/task-1/book.js
index 8b49ecc..32b0d70 100644
--- a/task-1/book.js
+++ b/task-1/book.js
@@ -1,3 +1,11 @@
-function isBookApplicable(searchString) {
-  // Your code here
-}
+const  bookTitle = "The fundamentals of JavaScript";
+
+const cleanUpString = str =>  str.trim().toLowerCase();
+
+const isBookApplicable = searchString => cleanUpString(bookTitle).includes(cleanUpString(searchString));
+
+console.log(isBookApplicable("javascript"));
+console.log(isBookApplicable("javascript "));
+console.log(isBookApplicable("python"));
+console.log(isBookApplicable("book"));
+console.log(isBookApplicable("JAVASCRIPT"));
\ No newline at end of file
diff --git a/task-2/parse-date.js b/task-2/parse-date.js
index 877a3aa..db10e82 100644
--- a/task-2/parse-date.js
+++ b/task-2/parse-date.js
@@ -1 +1,36 @@
-// Your code here
+const parseDateString = (input) => {
+  const separatorPosition = input.indexOf(" ");
+  if (separatorPosition === -1) return "Invalid date input";
+
+  const dateFormat = input.slice(0, separatorPosition);
+  const rawDate = input.slice(separatorPosition + 1);
+
+  const firstHyphen = rawDate.indexOf("-");
+  const secondHyphen = rawDate.lastIndexOf("-");
+
+  const partOne = Number(rawDate.slice(0, firstHyphen));
+  const partTwo = Number(rawDate.slice(firstHyphen + 1, secondHyphen));
+  const yearValue = Number(rawDate.slice(secondHyphen + 1));
+
+  if (isNaN(partOne) || isNaN(partTwo) || isNaN(yearValue)) {
+    return "Invalid date input";
+  }
+
+  if (dateFormat === "MDY") {
+    return {
+      month: partOne,
+      day: partTwo,
+      year: yearValue
+    };
+  }
+
+  if (dateFormat === "DMY") {
+    return {
+      day: partOne,
+      month: partTwo,
+      year: yearValue
+    };
+  }
+
+  return "Invalid date input";
+};
diff --git a/task-3/date.js b/task-3/date.js
new file mode 100644
index 0000000..14e59c8
--- /dev/null
+++ b/task-3/date.js
@@ -0,0 +1,6 @@
+export const convertHoursToMinutes = (hour) => hour * 60;
+export const convertMinutesToHours = (minute) => minute / 60;
+export const convertDaysToHours = (days) => days * 24;
+export const convertHoursToDays = (hour) => hour / 24 ;
+export const convertMinutesToSeconds = (minute) => minute * 60;
+export const convertSecondsToMinutes = (second) => second / 60;
\ No newline at end of file
diff --git a/task-4/cleanup.js b/task-4/cleanup.js
index 207523a..1d2fff7 100644
--- a/task-4/cleanup.js
+++ b/task-4/cleanup.js
@@ -1,80 +1,46 @@
-// Temperature conversion and weather report for City 1
-let cityName1 = "Amsterdam";
-let tempCelsius1 = 22;
-let tempFahrenheit1 = (tempCelsius1 * 9 / 5) + 32;
-let tempKelvin1 = tempCelsius1 + 273.15;
-console.log("Weather Report for " + cityName1);
-console.log("Temperature: " + tempCelsius1 + "°C");
-console.log("Temperature: " + tempFahrenheit1 + "°F");
-console.log("Temperature: " + tempKelvin1 + "K");
-if (tempCelsius1 < 0) {
-  console.log("Status: Freezing");
-} else if (tempCelsius1 >= 0 && tempCelsius1 < 10) {
-  console.log("Status: Cold");
-} else if (tempCelsius1 >= 10 && tempCelsius1 < 20) {
-  console.log("Status: Mild");
-} else if (tempCelsius1 >= 20 && tempCelsius1 < 30) {
-  console.log("Status: Warm");
-} else {
-  console.log("Status: Hot");
-}
-console.log("---");
+const celsiusToFahrenheit = (celsius) => (celsius * 9 / 5) + 32;
+const celsiusToKelvin = (celsius) => celsius + 273.15;
 
-// Temperature conversion and weather report for City 2
-let cityName2 = "Berlin";
-let tempCelsius2 = 15;
-let tempFahrenheit2 = (tempCelsius2 * 9 / 5) + 32;
-let tempKelvin2 = tempCelsius2 + 273.15;
-console.log("Weather Report for " + cityName2);
-console.log("Temperature: " + tempCelsius2 + "°C");
-console.log("Temperature: " + tempFahrenheit2 + "°F");
-console.log("Temperature: " + tempKelvin2 + "K");
-if (tempCelsius2 < 0) {
-  console.log("Status: Freezing");
-} else if (tempCelsius2 >= 0 && tempCelsius2 < 10) {
-  console.log("Status: Cold");
-} else if (tempCelsius2 >= 10 && tempCelsius2 < 20) {
-  console.log("Status: Mild");
-} else if (tempCelsius2 >= 20 && tempCelsius2 < 30) {
-  console.log("Status: Warm");
-} else {
-  console.log("Status: Hot");
-}
-console.log("---");
+const getWeatherStatus = (celsius) => {
+  if (celsius < 0) return "Freezing";
+  if (celsius < 10) return "Cold";
+  if (celsius < 20) return "Mild";
+  if (celsius < 30) return "Warm";
+  return "Hot";
+};
 
-// Temperature conversion and weather report for City 3
-let cityName3 = "Copenhagen";
-let tempCelsius3 = -5;
-let tempFahrenheit3 = (tempCelsius3 * 9 / 5) + 32;
-let tempKelvin3 = tempCelsius3 + 273.15;
-console.log("Weather Report for " + cityName3);
-console.log("Temperature: " + tempCelsius3 + "°C");
-console.log("Temperature: " + tempFahrenheit3 + "°F");
-console.log("Temperature: " + tempKelvin3 + "K");
-if (tempCelsius3 < 0) {
-  console.log("Status: Freezing");
-} else if (tempCelsius3 >= 0 && tempCelsius3 < 10) {
-  console.log("Status: Cold");
-} else if (tempCelsius3 >= 10 && tempCelsius3 < 20) {
-  console.log("Status: Mild");
-} else if (tempCelsius3 >= 20 && tempCelsius3 < 30) {
-  console.log("Status: Warm");
-} else {
-  console.log("Status: Hot");
-}
-console.log("---");
+const calculateWindChill = (tempCelsius, windSpeed) =>
+  13.12 
+  + 0.6215 * tempCelsius 
+  - 11.37 * Math.pow(windSpeed, 0.16) 
+  + 0.3965 * tempCelsius * Math.pow(windSpeed, 0.16);
 
-// Wind chill calculation for City 1
-let windSpeed1 = 15;
-let windChill1 = 13.12 + 0.6215 * tempCelsius1 - 11.37 * Math.pow(windSpeed1, 0.16) + 0.3965 * tempCelsius1 * Math.pow(windSpeed1, 0.16);
-console.log("Wind chill in " + cityName1 + ": " + windChill1.toFixed(2) + "°C");
+const generateWeatherReport = (cityName, tempCelsius, windSpeed) => ({
+  city: cityName,
+  tempCelsius: tempCelsius,
+  tempFahrenheit: celsiusToFahrenheit(tempCelsius),
+  tempKelvin: celsiusToKelvin(tempCelsius),
+  status: getWeatherStatus(tempCelsius),
+  windChill: calculateWindChill(tempCelsius, windSpeed)
+});
 
-// Wind chill calculation for City 2
-let windSpeed2 = 20;
-let windChill2 = 13.12 + 0.6215 * tempCelsius2 - 11.37 * Math.pow(windSpeed2, 0.16) + 0.3965 * tempCelsius2 * Math.pow(windSpeed2, 0.16);
-console.log("Wind chill in " + cityName2 + ": " + windChill2.toFixed(2) + "°C");
+const displayWeatherReport = (report) => {
+  console.log("Weather Report for " + report.city);
+  console.log("Temperature: " + report.tempCelsius + "°C");
+  console.log("Temperature: " + report.tempFahrenheit.toFixed(2) + "°F");
+  console.log("Temperature: " + report.tempKelvin.toFixed(2) + "K");
+  console.log("Status: " + report.status);
+  console.log("Wind chill in " + report.city + ": " + report.windChill.toFixed(2) + "°C");
+  console.log("---");
+};
 
-// Wind chill calculation for City 3
-let windSpeed3 = 25;
-let windChill3 = 13.12 + 0.6215 * tempCelsius3 - 11.37 * Math.pow(windSpeed3, 0.16) + 0.3965 * tempCelsius3 * Math.pow(windSpeed3, 0.16);
-console.log("Wind chill in " + cityName3 + ": " + windChill3.toFixed(2) + "°C");
\ No newline at end of file
+const displayWeather = (cityName, tempCelsius, windSpeed) => {
+  const report = generateWeatherReport(cityName, tempCelsius, windSpeed);
+  displayWeatherReport(report);
+};
+
+displayWeather("Amsterdam", 22, 15);
+displayWeather("Berlin", 15, 20);
+displayWeather("Copenhagen", -5, 25);
+displayWeather("Madrid", 30, 10);
+displayWeather("Oslo", 5, 18);
\ No newline at end of file