Just as support to already existing answers, here's to the question the most relevant excerpt from NASA Announces Television Coverage, Media Activities for Pluto Flyby:
7:30 a.m. – Media Briefing: Arrival at Pluto, Inside the Pluto System and New Horizons’ Perilous Path (live on NASA TV)
At 7:49 a.m., the New Horizons spacecraft will make history as flies
past Pluto, after a journey of more than nine years and 3 billion
miles. For much of the day the New Horizons spacecraft will be out of
communication with mission control as it gathers data on Pluto and its
The moment of closest approach will be marked with a live NASA TV
broadcast that includes a countdown, a discussion of images and data
received thus far, and what’s expected next as New Horizons makes its
way past Pluto and potentially dangerous debris. Follow the path of
the spacecraft in real time with a visualization of the actual
trajectory data, using NASA’s Eyes on Pluto.
9 a.m. – noon -- Interview Opportunities (no NASA TV coverage)
Informal group briefings and availability for one-on-one interviews.
An updated schedule will be posted in the New Horizons Media Center.
Noon – 3 p.m. – Panel Discussions (no NASA TV coverage)
- New Horizons mission overview and history
- Pluto system discoveries on approach
- Mariner 4 and Pluto: 50 years to the day
8 – 9:15 p.m. -- NASA TV program, Phone Home, broadcast from APL Mission Control
NASA TV will share the suspenseful moments of this historic event with
the public and museums around the world. The New Horizons spacecraft
will send a preprogrammed signal after the close approach. The mission
team on Earth should receive the signal at about 9:02 p.m. When New
Horizons “phones home,” there will be a celebration of its success and
the anticipation of data to come over the days and months ahead.
9:15 – 10 p.m. -- Media Briefing: New Horizons Health and Mission
Status (live on NASA TV)
All times are in EDT (Eastern Daylight Time) and this schedule is subject to change. For mentioned NASA activities that won't be covered on NASA TV, and also other New Horizons related activities organized by other organizations, please follow updates to our Chat Room Schedule and join us in our main chat room as events begin, where we discuss them and share links to where they can be accessed from live and/or as recordings. Invitation extends also to non-related to New Horizons events that we schedule there. Welcome!
And here are New Horizons' scheduled transmission dates, from June 20 to July 23 Observation Playbook (PDF):
- Approach Hi Speed Playback – Before July 12th, 2015 (Before DOY 193)
- Fail Safe – July 12-13th, 2015 (DOY 193-194)
- E_HEALTH_1 & Phone Home – July 14th, 2015 (DOY 195)
- 1st Look Playback – July 15-16th, 2015 (NYTimes datasets) (DOY 196-197)
- Early High Priority – July 17-20th, 2015 (DOY 198-201)
- Browse Playback (lossy) – all high speed data sent back Sept. 14th - Nov. 18th, 2015 (DOY 257-332)
- Full Playback (lossless) – all data sent back between Nov. 18th, 2015 and Oct. 2016
Note: EDT runs March 8th – Nov. 1st, 2015 (DOY 67–305 – switches half
way through Browse)