Dagsmeja is thaw in the beginning of Spring when the sun shines and temperature lies above zero in daytime, and falls below on clear nights - translated as 'midday thaw' in my dictionary. It means "power of the day".
Sometimes dagsmeja has been ranked as the most beautiful word in the Swedish language (I think I prefer solkatt).
This is the day before yesterday. It has been dagsmeja. The sun is sinking and it's already below zero. The snow is glazed with ice - skare: http://svenska.iedior.se/#post52.