write the date you actually arrived with an addendum explaining the error. You can also ask the customs and border protection to change the date and issue you a new I94
I agree with my colleague ... use the 'real' date of 1 MAR 2013.
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This should not make a big difference. Put the date stamped on your I-94 Card by CBP.
You can provide both documents and explain that this is the same date because of leap year.
Garmo Law Group, PLLC (Michigan) 248-626-0050. This advice is only general in nature and does not constitute an attorney/client relationship. Speak to an experienced attorney before making decisions.