As you can see in this picture, the wallpaper has it's clock change. This (from here, read the top comment) is actually real since there was a download link for this.

So in short, 2 questions

• Will I be able to stick a giant clock after the clouds like this? Or at least make the clock show after the image alpha layer?

• Will Ubuntu be able to change the wallpaper depending on the weather? (like this set of wallpaper that has a comment saying that he/she can use IFTTT which I'm not quite sure)

2 Answers

Info on desktop

You can use conky.

Installation

Just install the conky-all package.

Configuration

Create a file named .conkyrc (note the dot) in ~/. The format for .conkyrcs is documented here

You can also get good-looking "ready-made" conkyrcs here: DeviantArt

Change wallpaper based on weather and time

So, apparently WeatherPaper does not work. So, I made my own:

Using Wallpaper Clocks in Ubuntu

#1: Install Wallch

First we need to install an application that supports wallpaper clocks in Ubuntu. Slidewall - the application recommended by vladstudio doesn't work with Ubuntu 14.04; instead we are going to install Wallch (Wallpaper Changer).

1. Download Wallch 32bit or 64 bit depending on your system architecture.
2. Install it via the software Center or via command line
   sudo dpkg -i /home/parto/Desktop/wallch_4.12-1trusty_i386.deb
3. Launch Wallch either via the dash or in terminal by typing the command: wallch

#2: Get your desktop display resolution

We need to know the resolution of our display so as to know which wallpaper size to download.

1. Launch system settings and select Display
2. Note your screen resolution somewhere. Mine is 1366x768.

#3: Download Wallpaper Clocks

To download Wallpaper Clocks:

1. Go to Vlad Studio and click on a wallpaper clock of your choice.
2. Let us choose Airlines 2

3. Download the .wcz file using the resolution size of your display as noted above. Mine was 1366x768.

4. Save it in your computer.

#4: Add Wallpaper Clocks to Wallch

To add the wallpaper Clock to Wallch:

1. Launch wallch.
2. Select the Wallpaper Clocks tab and click the Install button.

2. Browse to your .wcz file and select it. Then click on the Activate Wallpaper Clock button. Do not extract it, just open it as it is.

3. It will be set automatically as your desktop background, with the correct time and date.

Here's my desktop.