Bridgeit, you are absolutely correct, a fact is a fact and cannot be disputed. However, as you rightly say, opinions about facts can and do differ. And that’s where robust, but polite, discussion comes in.
Were you more emotionally attached to one parent over the other ?
Anyone Delays their Kids for Kindergarten?
Do you always alter your clocks?

One which maybe a few here may be familiar with and I'm confident that one day it'll go the right way. Supporters are also on Twitter.