What's the PI WebParts version you are using?
Of what data type is the AF Table Lookup column containing your date?
What Symbol are you using to display the date?
If I open this SVG file in internet explorer it appears fine as expected.
Have you tried this on the PI WebParts server? I can imagine that the issue you are seeing is because of different locale settings.
Got the catch :)
In the AF Table Attribute datatype which used the data from AF table was defined as string .... Changed it to date & time and things worked :)
My Bad.... your questions led to my answer :)
Thank you for the update. Please believe me that I didn't knew the answer. However, leading you to it appears even better than answering directly