I am waiting on my back pay for SSDI. My EOD is May 2011 but the letter online says, "Information About Past Social Security Benefits
From December 2013 to March 2014, the full monthly Social Security benefit before any deductions was $869.90.
We deducted $0.00 for medical insurance premiums each month.
The regular monthly Social Security payment was $869.00.
(We must round down to the whole dollar.).
My question is why are the dates different than my EOD?