(/me playing Mr. Links today...) NOAA makes the Plan of the Day (and plan of tomorrow) available through http://www.nhc.noaa.gov/reconlist.shtml. The current plan is:
Code:

000
NOUS42 KNHC 061700
WEATHER RECONNAISSANCE FLIGHTS
CARCAH, TPC/NATIONAL HURRICANE CENTER, MIAMI, FL.
0100 PM EDT WED 06 JULY 2005
SUBJECT: TROPICAL CYCLONE PLAN OF THE DAY (TCPOD)
         VALID 07/1100Z TO 08/1100Z JULY 2005
         TCPOD NUMBER.....05-040

I.  ATLANTIC REQUIREMENTS
    1. TROPICAL STORM DENNIS
       FLIGHT ONE                    FLIGHT TWO
       A. 07/1800,08/0000Z           A. O8/0000Z
       B. AFXXX 0404A DENNIS         B. NOAA9 0504A DENNIS
       C. 07/1430Z                   C. 07/1800Z
       D. 19.0N 77.4W                D. NA
       E. 07/1700Z - 08/0030Z        E. NA
       F. SFC TO 10,000 FT           F. 41,000-45,000 FT

       FLIGHT THREE                  FLIGHT FOUR
       A. 08/0000Z                   A. 08/0600Z
       B. AFXXX 0604A DENNIS         B. NOAA2 0704A DENNIS
       C. 07/1800Z                   C. 08/0430Z
       D. NA                         D. 20.4N 79.8W
       E. NA                         E. 08/0530Z - 08/0900Z
       F. 24,000 T0 30,000 FT        F. SFC TO 10,000 FT

       FLIGHT FIVE
       A. 08/1200,1800Z
       B. AFXXX 0804A DENNIS
       C. 08/0800Z
       D. 21.1N 80.9W
       E. 08/1100Z TO 08/1830Z
       F. SFC TO 10,000 FT

    2. OUTLOOK FOR SUCCEEDING DAY: CONTINUE 6-HRLY FIXES. A G-IV
       FLIGHT FOR 09/0000Z.

So it looks like the next recon fix is by flight 1, and is at 1800Z (line A), or 2 p.m. EDT. The plane will be on site at 1700Z (1 p.m. EDT) and stay there until 08/0030Z (8:30 p.m. today EDT, line E). Unless I'm reading this totally wrong

Edited to put in and discuss today's plan instead of tomorrow's

Jax Chris