Time Manipulation in WebdriverIO TS Mocha Framework

Urgent project for a WebdriverIO TS and Mocha expert to augment our existing automated test framework. We require help in adjusting the system time within test cases to emulate various times of day (morning, afternoon, evening), and resetting it back to real time post execution. The solution should be integrated into our existing Page Object Model (POM) structure without the need for additional files or structural changes. The ideal candidate will have a strong grasp of JavaScript and Typescript, and proven experience in manipulating date/time in automated testing environments. Deadline: End of today.