Japan - Narita City to Narita Early AM

I tried the search feature and could not find an answer.
I'll be in Narita and walking distance to either the JR or Keisei station and wondered what time the first train to NRT airport is on a weekday morning. I tried looking on the Keisei and JR website but found them a bit clunky and shy of the information I was looking for.
Thanks in advance.

First Keisei train leaves at 6:12am and arrives at 6:21am. First JR train leaves at 6:19am and arrives at 6:30am.

Source: http://transit.loco.yahoo.co.jp

Jorudan (http://www.jorudan.co.jp/english/) is your friend. ^

Thanks for the help! I never fail to learn so much from those that post on FT