I live in the West Midlands and realise that since the Winter Solstice, we've gained 4 minutes daylight in the afternoon, whilst the mornings have continued getting darker, and will not not get lighter until after January 4th. This is due to the equation of time caused primarily by obliquity (the tilt of the earth's axis as it orbits the sun) and to a lesser degree due to eccentricity (the varying distance from the sun). My dad is convinced that we rapidly gain daylight after the solstice. However, I've explained to him that the change in daylight from day to day, be if positive or negative, is only subtle. How can I give him a clear explanation of this? Thanks