Not properly working when it comes to time zones with difference of +/- 30 minutes, like IST zone which is UTC + 5.5, it ignores the .5, so Africa/Dakar shows 8:30AM, IST should show 2:00PM, instead it shows 1:30PM.

Complicated and officious, rather poor graphically.
*I really don't have time to consult the map every time I want to add a location - please list countries and cities, not just time zones. *Ticking 'show bottom panel' does - what? I see no bottom panel.
*Pursuant to last point, doesn't explain itself, and it could easily if ...
*... it had tool tips or hover-over descriptions.
*No reason this thing cannot colonise the bottom bar.
Not keeping it. I just want a palette of clocks like with (presently defunct) FoxClocks.