[Bug] Check if Invalid time before sending to server

[mxschmitt]

Repro:

test('has title', async ({ page }) => {
  await page.clock.setSystemTime(new Date('2023-08-08T08:08:88.714Z'));
  await page.goto("https://minhaj-313.github.io/Online-Clock/");
});

Throw a better error there / check for invalid date.