Simon's World Map


Now that I'm playing with DX on 80m I need a simple display which shows me at the very least:

  • Current Time
  • Sunrise / Sunset
  • Greyline map
  • DX stations

There are commercial geo clock solutions such as Geochron, but as a programmer with spare HD monitors and computers I decided to write my own, that way i have exactly what I want.


This is a rewrite of a previous project, this program:

  • Uses DirectX / Direct2D graphics
  • Requires minimumal CPU power, will run on any Windows 7 / 8 / 10 system
  • Written to learn some new areas of Direct2D graphics
  • Written with Visual Studio 2017 (normally VS2013 is used) to learn the new features of VS2017

As time permits the program will be updated, I have a few interesting ideas in the pipeline.


The program includes three resized Natural Earth maps which have been resized to 4k or slightly less.

Higher-resolution files scale better when a Zoom is applied, but you may have problems loading them (see Errors below).

Click on a link below to download the image to your computer, then select the image (Ribbon bar, Map, Select). Only jpg format images are supported.

Nautal Earth 1 Cross-blended Hypsometric Tints



Natural Earth II with Shaded Relief, Water, and Drainages



Natural Earth III Texture (No Ice, No Clouds)



One error has been found, this is currently being investigated. The error is shown below. This occurs if the image file cannot be loaded, so try a smaller size instead.




Version 1.0.8, May 19th, 2019 [link]


Note: File updated at 20:09 GMT with correct C++ runtime support libraries. If you got an error MFC140U.dll not found then download the kit again.

Minor changes which I finally found time for.

  • Installs a 64-bit executable on 64-bit Windows, previously the 32-bit executable was used on 64-bit Windows.
  • Text colour in Clock, Sunrise / Sunset etc. is user-selectable.
  • Sunrise / sunset shown for entries in the station list.
  • Timezone markers updated.


Version 1.0.7, October 9th, 2018 [link]


  • Fix hang on closing
  • Added Data option to Time display
  • Added more built-in maps: Black Marble, Night Lights
  • Fixed small A,K decoding issue (still using DGD data)
  • Default A,K source set to WWV
  • Added direct display of Geomagnetic, Solar and WWV data to Space Weather
  • Custom time zone support
  • Home icon now supported – just look at the options on the home option

Space Weather

If the Space Weather shows values of - then the data is either incomplete or you have a Firewall entry missing.

More information is available here [link].



Shaded Relief

Ideas and Techniques about Relief Presentation on Maps

Natural Earth

Free vector and raster map data at 1:10m, 1:50m, and 1:110m scales





  • Sunrist/sunset
  • Current time (local/UTC)
  • Timesones
  • Country borders
  • Station list

Time Offset

With the time offset you easily select any time in the past or future, the greyline / sunrise / sunset honour this offset. A simple way to see what the greayline will be like for DX planning.


  • Full screen
  • Disable screensaver
  • Disable sleep
  • Screenshots




Space Weather

The optional space weather overlay uses data from the US Dept. of Commerce, NOAA, Space Weather Prediction Center, this is accessed via ftp.

Solar Flux

The source of solar flux data is DSD (

Geomagnetic (A, K)

The most commonly used source of data is WWV ( however data for additional sites is available in DGD ( The sites supported by DGD are:

  • Fredericksburg (middle latitude),

  • Fairbanks Alaska (high latitude), and

  • Planetary where the A value is estimated.


If the displayed values are shown as - as below then either:

  1. No data is currently available, or
  2. A firewall is blocking access to the data source.


Check Data

To check that data is available select an entry in the Data section of the Space Weather menu. The text (human readable) files used by this program are shown in your default web browser, the WWV text for Sept. 26, 2018 is shown below.



Your firewall must be open, an example of the Windows Defender Firewall entries is shown below (click for a full size image).