sorry to bother you again, i really hope to get a sure answer.
in my I140 form,
there 3 dates: Priority Date 3/26/2009, receipt date 2/4/2010, notice date 3/22/2010
the question is how many days can be extended for the 21 yesars old daughter?
it is 2/4/2010 or 3/22/2010 - 3/26/2009?
the link 可怜天下父母心 uses the link:
http://www.immihelp.com/immigrant-visa/cspa-calculator/