Developer to Fix JS plugin for both mobile application and web

We need help fixing a plugin that gives us time remaining result but it gives wrong time due to timezone issues. Server sends time in GMT + 1 and the plugin compares with the local timezone to find the remaining time thus we see a mismatch. If you are in GMT +8 timezone then you will see a 7 hours mismatch in remaining time. For mobile: Plugin used is ngx-countdown-timer [ [login to view URL] ] We are using ionic 3 to develop the mobile app for both iOS and Android. Basic Flow: Server sends time in CET (GMT +1): Example 36 Hours remaining You need to Pull user timezone (Example GMT +5.30 for India) Deduct time from fetched time from server (GMT +1 - GMT +5.30 = 4.30 Hours >> This means 36 Hours - 4.30 Hours = 31.30 Hours) Now timer should show remaining time 31.30 hours instead 36 hours for users from India For Web: We are using CakePHP to develop the website and the timer plugin used is: The Final Countdown for jQuery v2.2.0 ([login to view URL]) What needs to be done: Add condition to convert values received from server to local timezone then compare the remaining time. / Or you can suggest a better plugin that can do what we need and implement that ** Will prefer whichever costs less time and money** Technical requirements: jQuery JavaScript Ionic Framework AWS database CakePHP Angular Soft skill requirements: Good time management Team work Problem - solving Keep your commitment