If using the March or September equinox as an average in terms of daylight hours, the time zones are about right.
For Spain, I suppose it was a hard decision as a lot of people live towards the east (Barcelona and Valencia), with the exception of Madrid and wanted to be inline with most of Western Europe. Portugal is right to use GMT/WET/WEST, they did a CET experiment in the 1990's and it didn't go too well.
For Spain, I suppose it was a hard decision as a lot of people live towards the east (Barcelona and Valencia), with the exception of Madrid and wanted to be inline with most of Western Europe. Portugal is right to use GMT/WET/WEST, they did a CET experiment in the 1990's and it didn't go too well.
![www.timeanddate.com](https://c.tadst.com/gfx/1200x630/ogdaynightmap.png?1)