Vernal equinox for 2009 rendered in Catfood Desktate. It's the start of Spring for the northern hemisphere and Autumn for the southern.
To render images in Desktate run Catfood Desktate Settings, select the Advanced page and then click Save Images. Enter the date (March 20, 2009) and the time of the equinox (11:44 GMT) and then save the image. See Catfood Desktate Help for detailed instructions.