When writing the date, I've started adding the abbreviation CE after the year
CE stands for Common Era. It's the non-religious version of AD.
January 16, 2016 CE
I can't tell you how much fun this has been. It confuses people. Makes them a little crazy. Upsets the apple cart. Causes their two eyebrows to scrunch together as one.
It's often the little things that can be the most amusing.