NTU Physics Public Christmas Lecture - How has the Sun affected our calendar?

Speaker: Dr Ian Whittaker, Nottingham Trent University
We all know that Christmas day is December 25th - but has it always been?
A number of winter holiday dates, both secular and religious, reside in December, and we will be looking at their origins and why this happens from a space physics perspective.
We will take a look at different types of calendars and the controversy of the tax year – all related to the position and rotation of the Earth in the solar system.
This talk is open to all and you do not need to have any prior knowledge – there will also be no equations!
The venue at Nottingham Trent University Clifton Campus is accessible via public transport - see maps and directions here.