Yes, that was Really Surprising - but Nori told me today that Her Twitter shows a Different Birthday Date ( August instead of March ) when she looked at my account ( on June 25th 2018 ).
I checked my bio - the date was Correct! :) - March 11th, just as I wrote My Birthday Date when I added it :) ... - but then she showed me a Screenshot of 'How Her Twitter Sees it' - & there really was 'August 14th! :D
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- it says 'Cumpleanos 14 de Agosto' - which means 'Birthday August 14th! XD )
*Why did Spanish twitter change My Birthday Date Itself?