Program Schedule

Abstracts for the invited and oral presentations can be found under the Program menu

Sunday, June 5 - The Science of Time

Registration
18:00-21:00
(Courtyard Marriorr - Cambridge)
Reception
19:00-21:00
(Courtyard Marriott - Cambridge)

Monday, June 6 - The History of Time

(all sessions at Northwest Building (Harvard), 52 Oxford St.)

Registration opens at 08:00 in the NWBldg, Monday through Thursday

07:45, 08:15, 08:35 - Buses leave Courtyard for NWBldg

Session 1
09:00-10:15
(Arnold Rots, Smithsonian Astrophysical Observatory)
09:00
Welcome
09:05
Chris Impey -
Cosmic Time: From the Big Bang to the Eternal Future (invited)
09:40
William Andrewes -
The Proof of the Pudding (invited)
Coffee
10:15-10:45
Session 2
10:45-12:00
(Paul Gabor, Vatican Observatory)
10:45
Owen Gingerich -
Ephemerides from Babylon to Kepler (invited)
11:20
Susanne Hoffmann -
Measuring time and the development of coordinate systems in ancient Babylonia and Greece
11:40
Susan Nelmes -
Changing Times in The Nautical Almanac Over 250 Years
Lunch
12:00-13:30
(provided)
Session 3
13:30-15:05
(Owen Gingerich, Harvard University)
13:30
Donald Saff -
Bond Time: The Electric Method of Time Recording (invited)
14:05
Geoff Parsons -
The Development and Use of the Pilkington and Gibbs Heliochronometer and Sol Horometer
14:25
Sara Schechner -
These Are Not Your Mother's Sundials: Or, Time and Astronomy's Authority
Coffee
14:45-15:15
Session 4
15:15-17:15
(Kennth Seidelmann, University of Virginia)
15:15
Dennis McCarthy -
The History of Time (invited)
15:50
Mosab Hawarey -
The Concept of Time in the Holy Quran
16:10
Vance Tiede -
Stonehenge & Timing Typhon
16:30
Harlan Stenn -
"When?" It's a basic question that we ask all the ... time. (invited)
Poster Viewing
17:05-17:45
Buses
17:30, 18:00
(leave NWBldg for Courtyard)

Tuesday, June 7 - Precision Timekeeping

07:45, 08:15, 08:35 - Buses leave Courtyard for NWBldg

Session 5
09:00-10:15
(Mizuhiko Hosokawa, National Institute of Information and Communication Technology)
09:00
Announcements
09:05
Felicitas Arias -
Atomic time scales and their links to astronomy (invited)
09:40
Demetrios Matsakis -
Relativistic Time at the U.S. Naval Observatory (invited)
Coffee
10:15-10:45
Session 6
10:45-12:00
(Rob Seaman, Lunar and Planetary Laboratory)
10:45
Daniele Rovera -
Real time realization of UTC at Paris Observatory (invited)
11:20
Donald Craig -
Time in Television Systems
11:40
Steve Allen -
From computer time to civil time: IANA tz and IETF tzdist
Lunch
12:00-13:30
(provided)
Session 7
13:30-15:00
(Felicitas Arias, Bureau International des Poids et Mesures)
13:30
Judah Levine -
The UT1 and UTC time services provided by NIST (invited)
14:05
Fritz Riehle -
On the redefinition of the SI second (invited)
14:40
Tetsuya Ido -
Time scales steered by optical clocks
Coffee
15:00-15:30
Special 8
15:30-17:00
(Steve Allen, University of California Observatories/Lick Observatory)
15:30
Tutorial on GPS/NTP
timekeeping
- Meinberg Radio Clocks Network Time Foundation
Poster Viewing
17:00-17:45
Buses
17:30, 18:00
(leave NWBldg for Courtyard)

Wednesday, June 8 - Time in the Universe

07:45, 08:15, 08:35 - Buses leave Courtyard for NWBldg

Sesson 9
09:00-10:15
(Ludwig Combrinck, Hartebeesthoek Radio Astronomy Observatory)
09:00
Announcements
09:05
Nicole Capitaine -
The determination of Earth orientation by VLBI and GNSS: principles and results (invited)
09:40
Francois Mignard -
Objectives and Status of the Gaia Mission (invited)
Coffee
10:15-10:45
Session 10
10:45-12:00
(Rob Seaman, Lunar and Planetary Laboratory)
10:45
Richard Easton -
Time Synchronization and the Origins of GPS
11:05
Josh Grindlay -
DASCH for Days to Decades Time Domain Astronomy
11:25
John Seago -
Mean Solar Time and Its Connection to Universal Time (invited)
Lunch
12:00-13:30
(provided)
Session 11
13:30-15:05
(Catherine Hohenkerk, Her Majesty's Nautical Almanac Office)
13:30
Stephen Malys -
How gravity and continuity in UT1 moved the Greenwich meridian (invited)
14:05
Ludwig Combrinck -
Aspects of time as it relates to Space Geodesy
14:25
Richard Manchester -
Pulsars - Celestial Clocks (invited)
Coffee
15:00-15:30
Session 12
15:30-16:50
(John Seago, Analytical Graphics Incorporated)
15:30
Paul Gabor -
The Leap Second Debate: Rational Arguments vs. Unspoken Unease
15:40
Wolfgang Dick -
How to talk popular about the leap second? The experience of the IERS Central Bureau
16:10
Bob Frankston -
The leap second should not be commingled with the time we use for appointments.
16:30
Brooks Harris -
Common Calendar Timescale
Poster Viewing
17:10-17:45
Buses
17:30, 18:00
(leave NWBldg for Courtyard)
Banquet
19:00-21:00
(Courtyard Marriott - Cambridge)

Thursday, June 9 - The Future of Time in Science and Society

07:45, 08:15, 08:35 - Buses leave Courtyard for NWBldg

Session 13
09:00-10:00 am
(Jonathan McDowell, Smithsonian Astrophysical Observatory)
09:00
Announcements
09:05
Rob Seaman -
Keeping Time with the Asteroids
09:25
Danny Hillis -
Long term timekeeping and the Clock of the Long Now (invited)
Coffee
10:00-10:30
Session 14
10:30-11:45
(Sara Shechner, Harvard University)
10:30
Daniel Wiley -
Time-Critical: Contesting the Measure of the Now
10:50
Kevin Birth -
Which Time is Relevant? Explorations of Timescale Pluralism (invited)
11:25
Michelle Bastian -
Liberating Clocks: Rethinking the potential of clock-time for social life
Lunch
11:45-13:00
(provided)
Session 15
13:00-13:55
(Catherine Hohenkerk, Her Majesty's Nautical Almanac Office)
13:00
Felicitas Arias -
New technologies and the future of time keeping
13:20
Adam Frank -
The Temporal Dimensions of Physics, Philosophy and Human Culture (invited)
Coffee
13:55-14:15
Roundtable Discussion
14:15
(pending moderator: Arnold Rots)
Symposium Adjourns
15:00
Buses
15:30, 16:00
(leave NWBldg for Courtyard)

Friday, June 10 - Bonus Time

08:30, 09:00 - Buses leave Courtyard for Science Center

09:30
Tour of Harvard Scientific Instrument Collection
(about two hours)