Decide application width depends on clock text length. Once it'd be rendered into virtual DOM, then get width from its DOM. And set the width correctly.
This idea is possible to set clock text freely.

Reduce warnings of security to install mclocks.

https://www.electronjs.org/docs/api/app#apprequestsingleinstancelock

const lock = app.requestSingleInstanceLock();
if(!lock){
  app.quit();
}

https://github.com/iamkun/dayjs

need more investigation about dayjs

Thank you for your software.

My config file as as follows.

{
	"clocks": [
		{ "name": "Auckland", "timezone": "Pacific/Auckland"}
		{ "name": "Melbourne", "timezone": "Australia/Melbourne" }
	],
	[. . . snip . . .]
}

In that configuration there is a comma missing after { "name": "Auckland", "timezone": "Pacific/Auckland"}. Instead of telling me of the error, the program just reverted to its initial configuration. That left me baffled - until I discovered the missing comma. So, some sort of error message would be useful!

I am using mclocks 0.1.15 (downloaded from MajorGeeks.com), on Windows 10.

it can be Invoked. But app screen was not shown.

Thank you for this handy application!

Is there a place when we could see the options available to use in "config.json" and values allowed?

Thank you
Dimitrios

Background color
font size
timezones

Not sure details yet though, the panel of mclocks is hiding other window even if it's being seen to not overraped.
So the panel size of mclocks should be correct as appearance.

Somehow, left side is be white, right side is be black.

Multiple timezone clocks

Correctly "The clock for multiple time zones" ?

Do this after #1

If this option is existed, setTimeout can be for each minutes without second info.

Current implementation has been in vain.

Which directory is better to locate it?

I am using mclocks 0.1.15 (downloaded from MajorGeeks.com), on Windows 10. Ideally, the clock would be on the desktop layer - in the way that the Rainlender application can be, or, on Linux, the way Conky can be - such that pressing Super-D, i.e., showing the desktop, does not hide the clock.

When a computer gets back from sleep, it would be happened.