List of Presentations

2013

1. (2013/09/nn) "TBA", invited talk at "Workshop on Geometric Correspondences of Gauge Theories", ICTP, Italy, Sep. 9-13.
2. (2013/11/nn) "TBA", invited talk at "Brane Tilings 2013", Chicheley, UK, Nov. 13-15.
3. (2013/09/nn) "TBA", invited talk at "Workshop on Geometric Correspondences of Gauge Theories", ICTP, Italy, Sep. 9-13.
4. (2013/06/nn) "TBA", invited to pre-Strings meeting, KIAS, Jun. 17-21.
5. (2013/05/22-24) Invited to N=2 Jeometry And ApplicationZ workshop Part II, McGill University, Canada, May 22-24.
   • (2013/05/22) "3d Chern-Simons Theory from M5-branes"
   • (2013/05/24) "4d Lens Indices from S-duality"
6. (2013/04/17) "(Non-)Geometry of SCFTs", invited to "Topics in Holography, Supersymmetry and Higher Derivatives", Taxas A&M.
7. (2013/04/10) "BPS boundary conditions in N=4 Super Yang-Mills Theory", invited to IAS group meeting.
8. (2013/01/15) "5d N=1 SCFTs Revisited", Seminar at Tokyo Institute of Technology.
9. (2013/01/12) "3-manifold Cookbook", "Exact Results in SUSY Gauge Theories and Integrable Systems" (slides), invited talk at Rikkyo University, Jan. 12-14.
10. (2013/01/08-10) Lecture series at RIMS, Kyoto Univ.

2012

1. (2012/10/12) "Bottom-up 4d/2d for 4d N=1 Quivers", seminar at Nagoya U.
2. (2012/10/10) "New Perspectives on SCFTs", mathematics and string theory seminar, invited to Kavli IPMU.
3. (2012/10/4) "Geometric Gauge Theories", seminar at Chuo U.
4. (2012/10/2) "Towards Gauge/Yang-Baxter Correspondence", Invited to Yukawa International Seminar (YKIS) 2012, Gauge/Gravity Duality, Kyoto, Sep. 24- Oct. 26.
5. (2012/09/19) "Domain Walls and Their Gravity Duals", invited to Geometric correspondences of gauge theories (II), Trieste, Sep 17-21, 2012.
6. (2012/09/13) "Geometric Gauge Theories", Plenary Talk at Japanese Physical Society fall meeting, 13aSF-1, abstract
7. (2012/08/30) "Quantum Dilogs and Elliptic Gammas in Gauge Theories", invited talk at "New perspectives in topological field theories", Hamburg, Aug. 27-31, 2012.
8. (2012/07/30) "Networks, Grasmannians and SCFTs" (video1, videos2), invited talk at 2012 Summer Simons Workshop in Mathematics and Physics, "Superconformal Theories in Diverse Dimensions", Jul. 30--Aug. 17, Stony Brook
9. (2012/07/27) "Networks, Quivers and 3-manifolds" (slides and video), invited plenary talk at Strings 2012, Munich, Jul. 23-28, 2012.
10. (2012/07/18) "Network and Seiberg Duality", Visiting Aspen Center for Physics, Exact Results in Gauge Theory and Their Applications, Jul 1- 22
11. (2012/03/29) "Quantum Point Contact and Beyond", PCTS lunch talk.
12. (2012/03/14) "3-manifolds from 4d superconformal index", High Energy Theory Seminar, Princeton University.
13. (2012/03/02) "Quivers, YBE and 3-manifolds" (video), Invited to "New perspectives on supersymmetric gauge theories", Feb. 27- Mar. 2, LMU Munich.
14. (2012/02/21) "Z[3d gauge theory]=Z[3-manifold]" (video and audio), Invited to Isaac Newton Institute for Mathematical Sciences, Mathematics and Applications of Branes in String and M-theory, Feb 12-26
15. (2012/02/14) Informal lunch talk at Princeton University.
16. (2012/01/22-27) "4d Superconformal Index on Lens Space", Invited to "Classical and Quantum Integrable Systems", Jan. 23-27, Dubna, Russia.
17. (2012/01/06) Informal Talk at IPMU, "3d gauge theories and 3-manifolds".

2011

1. (2011/12/15-22) Visiting Caltech
   • (12/19) "Walls, Teichmuller and 3-manifolds", seminar
2. (2011/12/06-08) Invited to Brown University
   • (12/07) "3-manifolds and 3d gauge theories", seminar
3. (2011/11/20-21) Invited to University of Michigan,
   • (11/20) "3-manifolds and 3d gauge theories", Geometry and Physics Seminar
4. (2011/11/17) Invited to University of Minnesota, FTPI
   • "3d SUSY gauge theories and 3-manifolds"
5. (2011/11/3-5) Invited to University of Cincinnati and University of Kentucky
   • (11/3) "Superconformal Index, Partition Function and Quantum Mechanics", seminar at U. Kentucky
   • (11/5) "3d/3d from scratch", SPOCK meeting
6. (2011/10/02) "6=3+3", talk at PCTS retreat
7. (2011/09/25-10/04) Invited to SISSA, Geometric Correspondences of Gauge Theories
   • (09/30) "Aspects of 3d/3d Relation"
8. (2011/09/01-10) Visiting Perimeter Institute
   • (09/12) "3-Manifolds and 3D Gauge Theories"
9. (2011/08/09-12) Invited talk at Summer Institute 2011, Fuji-Yoshida, Japan
   • (08/12) "3d SUSY Gauge Theories and Hyperbolic Geometry", notes taken by Prof. Hosomichi
10. (2011/07/25-08/05) Simons Summer Workshop in Mathematics and Physics 2011, "Integrable Structures and Low Dimensional Geometries", Stony Brook
    • (7/26) "3d Susy Gauge Theories and Hyperbolic Geometry", Video (part I, part II)
11. (2011/07/11-22) Nonperturbative Effects and Dualities in QFT and Integrable Systems, KITP
    • (07/20) "3d/3d from 4d/2d"
12. (2011/06/06-11) String-Math 2011, Univ. Pennsylvania
    • (06/08) Contributed Talk, "Hyperbolic Volume from Gauge Theories on Duality Walls", abstract, slides, movie
13. (2011/05/30-31) Visiting IPMU
    • (05/31) "6=3+3", Mathematics - String Theory Seminar, IPMU
14. (2011/05/24-27) Visiting CQUEST, Sogang University,
    • (05/26) "3d/3d and 3d/1d analogs of AGT relation", invited to Spring String Workshop, CQUEST, Korea, May 25-26
15. (2011/04/13) "SL(2,R) Chern-Simons, Liouville, and Gauge Theories on Duality Walls", IAS Physics Group Meeting
16. (2011/02/07-08) Visiting Math/Physics Research Group, Univ. Pennsylvania
    • Talk at High Energy Theory Seminar

2010

1. (2010/11/30) Informal talk at the lunch meeting of high energy theory group, Princeton University
2. (2010/09/15) "Quantum Black Holes and Crystal Melting", talk at PCTS retreat
3. (2010/08/23) "Donaldson-Thomas invariants, wall-crossing and matrix models", Derived category, Mirror symmetry and McKay correspondence seminar, IPMU
4. (2010/06/16) "Dimer, crystal, free fermion and wall-crossing", invited talk at Developments in Quantum Integrable Systems, RIMS, Jun 14-16
5. (2010/05/09-11) Visiting Mathematics Institute, Oxford
   • (2010/05/10) "Crystal Melting and Wall Crossing for Donaldson-Thomas Invariants", String theory seminar, abstract
6. (2010/04/28-05/08) Visiting LPTHE, Univ. Paris (invited as a federation fellow)
   • (2010/05/05) "Crystal Melting and Wall Crossing Phenomena", informal seminar at ENS
7. (2010/04/22-27) Visiting CERN Theory Division,
   • (2010/04/27) "Wall Crossing and Crystal Melting", seminar, abstract
8. (2010/04/18-21) Visiting Univ. Munich, Arnold Sommerfeld Center for Theoretical Physics
   • (2010/04/21) "topics in wall crossing and crystal melting", Lunch Seminar
9. (2010/04/14-17) Visiting DESY Theory Group
   • (2010/04/15) "BPS wall crossing and crystal melting", seminar
10. (2010/03/08-10) Invited to UT Austin Theory Group
    • (2010/03/09) "BPS Wall Crossing and Crystal Melting"
11. (2010/02/13-17) "amoeba, coamoeba and non-commutative Donaldson-Thomas invariants", Conference on Tropical Geometry and Mirror Symmetry, abstract
12. (2010/02/09) "Crystal Melting and Wall Crossing Phenomena", invited talk at UCLA
13. (2010/01/26) PhD defense, Univ. Tokyo
14. (2010/01/07) Informal seminar at Quantum Information Group, U. Tokyo

2009

1. (2009/11/04) "BPS wall crossing and crystal melting", invited talk at USC
2. (2009/10/11-15) Invited to Berkeley Center for Theoretical Physics
   • (2009/10/13) "Developments in Wall Crossing and Crystal Melting", Seminar
3. (2009/09/14,15) Seminar Series at Nagoya U.
4. (2009/09/10-09/13) Annual meeting of JPS (Sep. 10-13), Konan Univ., Program
   • (2009/09/11) Sakura Schafer-Nameki, Masahito Yamazaki and Kentaroh Yoshida, "Coset Construction for Duals of Non-relativistic CFTs" (presented by myself), 11aSH-6
   • (2009/09/11) Hirosi Ooguri and Masahito Yamazaki, "Crystal Melting and BPS State Counting" (presented by myself), 11pSH-1
   • (2009/09/13) Masahito Yamazaki, "Generalized Lie 3-algebras and Octonions", 13aSH-3
5. (2009/09/08-09) Visiting Yukawa Institute for Theoretical Physics
   • (2009/09/09) "developments in wall crossing phenomena", seminar
6. (2009/08/27) "Wall Crossing Formula and Crystal Melting", another talk at IPMU String Theory Informal Seminar
7. (2009/08/11) "Wall Crossing and M-theory", invited talk at Simons Workshop in Mathematics and Physics 2009, "Strings, Dark Matter, and the Geometry of Particle Phenomenology", audio file (in MP3, RealAudio, WMA), Simons Center for Geometry and Physics, Stony Brook, Jul. 27 - Aug. 21
8. (2009/06/18) "Non-commutative Donaldson-Thomas theory, wall crossing and black holes", IPMU String Theory Informal Seminar
9. (2009/05/21) "Crystal Melting and Wall Crossing Phenomena", Focus Week on New Invariants and Wall Crossing , IPMU, May 18-22
10. (2009/05/13) "Crystal Melting and Wall Crossing Phenomena", seminar at Komaba
11. (2009/05/11) "Crystal Melting and Wall Crossing Phenomena", seminar at Hongo
12. (2009/04/28) Visiting Hsinchu string group, seminar: "Moduli Stabilization in Stringy ISS Models", abstract
13. (2009/04/29-05/03) Visiting National Taiwan Normal University
    • (04/27) "Coset Construction for Duals of Non-relativistic Backgrounds", Seminar at NTNU
14. (2009/04/22-04/28) Visiting National Taiwan University, string theory group at Taiwan
    • (04/24) "Crystal Melting and Wall Crossing Phenomena", Seminar at NTU
15. (2009/03/29) Annual meeting of JPS (Mar 27-30), Rikkyo Univ., Program
    • Kazushi Ueda and Masahito Yamazaki, "quiver Chern-Simons-matter theories and AdS4/CFT3 correspondence" (29pXF-6) (presented by myself)
16. (2009/03/16-20) Visiting Kavli Institute for Theoretical Physics
    • (2009/03/20) "Crystal Melting and Non-commutative Donaldson-Thomas Theory" (notes and audio), invited talk at the conference "Dualities in Physics and Mathematics", KITP, Mar. 16-20 (wiki)
17. (2009/02/25) "Melting Toric Calabi-Yaus", Caltech high energy theory journal club
18. (2009/02/09-14) Visiting Perimeter Institute for Theoretical Physics
    • (2009/02/10) "Crystal Melting and Toric Calabi-Yau manifolds", string seminar, abstract, audio etc.
    • (2009/02/13) Pedagogical review on crystal melting and topological string theory, string group meeting
19. (2009/02/04-02/09) Visiting Harvard University
    • (2009/02/05) "Crystal Melting and Toric Calabi-Yau Manifolds", string duality seminar at Harvard
20. (2009/01/31-02/03) Visiting Princeton University
    • (2009/02/02) "New Crystal Melting Models for Toric Calabi-Yau manifolds", seminar at Princeton
21. (2009/01/26) "Crystal Melting and Toric Calabi-Yau Manifolds", seminar at UCLA

2008

1. (2008/12/08-11) Visiting the Michigan Center for Theoretical Physics
   • (2008/12/10) "Crystal Melting and Toric Calabi-Yau Manifolds", talk at Brown Bag Seminar at MCTP
2. (2008/12/01-05) Visiting string theory group at the university of Wisconsin, Madison
   • (2008/12/01,02) String theory seminar at Wisconsin, Madison
     • Quiver Chern-Simons-matter theories and AdS4/CFT3 correspondence
     • Heterotic-F theory duality revisited, slides
3. (2008/11/11) Yet another talk at high energy theory informal meeting at Caltech
4. (2008/10/07) Talk at high energy theory informal meeting at Caltech
5. (2008/09/22) Annual meeting of JPS, Sep. 20-23
   • Hiroyuki Fuji, Seiji Terashima and Masahito Yamazaki, "A New N=4 Membrane Action via Orbifold" (22pSP-1) , (presented by myself),
   • Yosuke Imamura, Keisuke Kimura and Masahito Yamazaki, "Anomalies and O-plane charges in orientifolded brane tilings" (22aSP-10), (presented by K. Kimura)
6. 2008/08/28-09/04, Invited to Korea Institute for Advanced Study
   • (2008/08/29, 09/02) blackboard seminar at KIAS, "Heterotic-F theory revisited (I), (II)".
7. (2008/07/30) "A New N=4 Membrane Action via Orbifold", YITP workshop -Developments in quantum field theory and string theory-, Jul.28-Aug.01, 1-min. introduction and proceeding in English
8. (2008/07/08) "Intersecting Solitons, Amoeba and Tropical Geometry", seminar at Osaka Univ., abstract in Japanese
9. (2008/07/01) "A New N=4 Membrane Action via Orbifold", seminar at Rikkyo Univ.
10. (2008/06/18) "Brane Tilings", seminar at Komaba, Univ. Tokyo, abstract, slides
11. (2008/05/29) "Quivers, brane tilings and toric Calabi-Yau/Sasaki-Einstein geometry", IPMU math seminar, abstract
12. (2008/04/15-05/15) Visiting Yukawa Institute for Theoretical Physics
    • (2008/04/23) "Intersecting Solitons, Amoeba and Tropical Geometry", seminar at Yukawa Institute for Theoretical Physics, slides
13. (2008/03/26) "Moduli Stabilization in Stringy ISS Models" (Yu Nakayama, Masahito Yamazaki and T.T. Yanagida, presented by myself), The 63th Annual meeting of JPS (program), 26aZD-8, 2008/3/22(Sat)-26(Wed), Kinki Univ.
14. (2008/02/21) "Categorification of Knot Polynomials, Topological Strings and Refined Topological Vertex", Invited talk at 5th Kinosaki Newcomers Seminar, Feb. 18-21, abstract
15. (2008/02/14) "Intersecting Solitons, Amoeba and Tropical Geometry", Invited talk at Black hole, Sasaki-Einstein and AdS/CFT correspondence, Yubara, Feb.14-16

2007

1. (2007/12/22) "Moduli Stabilization in Stringy ISS Models", RIKEN symposium, Quantum field theories and their symmetries, 2007/12/22(Sat)-23(Sun), poster
2. (2007/12/08) "Moduli Stabilization in Stringy ISS Models", International Workshop "Progress of String Theory and Quantum Field Theory", Dec.7-10, Osaka City University, slides and proceeding, published in Int. J. Mod. Phys. A, Vol. 23, (2008), pp2190-2191
3. (2007/11/27) "Moduli Stabilization in Stringy ISS Models", seminar at KIAS, slides
4. 2007/11/20-29, Visiting string theory group at Seuol national university
   • (2007/11/22,23) "Moduli Stabilization in Stringy ISS Models", blackboard seminar at SNU
   • (2007/11/26) "Exactly Marginal Deformation of Quiver Gauge Theories as Seen From Brane Tilings", seminar at SNU, slides
5. (2007/10/31) "Moduli Stabilization in Stringy ISS Models", seminar at department of physics, Kyoto Univ., abstract in English
6. (2007/10/26) "AdS/CFT correspondence for Sasaki-Einstein manifolds", Invited talk at the 13th International Symposium on Complex Geometry, Oct. 24-27, Sugadaira
7. (2007/09/24) Kazushi Ueda and Masahito Yamazaki, "Proof of Homological Mirror Symmetry by Brane Tilings", presented by myself, 24aZF-8, abstract in Japanese; Annual meeting of JPS, Hokkaido Univ. Sep. 20-24
8. (2007/08/26) "coamoeba and homological mirror symmetry for toric orbifolds of toric del Pezzo surfaces", invited talk at 54th geometry symposium, Aug. 24-27, Kagoshima Univ.; proceeding in Japanese
9. (2007/06/11) Informal discussion on dimers and quiver gauge theories, partially based on arXiv:0705.1645
10. (2007/06/06) "What AdS/CFT correspondence tells us about Sasaki-Einstein geometry", Tokyo Geometry Seminar, Abstract in Japanese
11. (2007/06/01) "Introduction to brane tilings", Seminar at Kanazawa Univ., abstract in Japanese
12. (2007/05/21) Journal Club at Math. Dept., Nagoya Univ. on hep-th/0703214
13. (2007/05/10) "Deformation of brane tilings vs. exactly marginal deformation of quiver gauge theories", seminar at Tohoku Univ., abstract in Japanese; Transparency in Japanese
14. (2007/04/20) Duality seminar at Hongo, "Non-supersymmetric Black Holes and Topological Strings", Saraikin and Vafa: hep-th/0703214
15. (2007/03/27) Annual meeting of JPS, Tokyo Metropolitan Univ. (03/25-28)
    • Yosuke Imamura, Hiroshi Isono, Keisuke Kimura and Masahito Yamazaki, "on the moduli spaces of tilings" (27aSL-1), presented by K. Kimura, abstract (written by K. Kimura)
16. (2007/03/13) "Brane Tiling Gives Rigorous Proof of Homological Mirror Symmetry for Toric Del Pezzo Surfaces", Poster Presentation, KEK theory workshop, 2007/03/12-15, abstract
17. (2007/03/06) "What is brane tiling?", Graduate Lectures in Sapporo & Winter School in Niseko ‘ 07 , Feb. 28-Mar.08
18. (2007/02/23) "Exactly marginal deformation of quiver gauge theories as seen from brane tilings", invited talk at Nagoya String Theory Workshop 2007, Feb. 23-24
19. (2007/02/22) "Recent developments in the theory of toric Sasaki-Einstein manifolds", 4th Kinosaki Newcomers Seminar, Feb. 19-22, abstract in Japanese; proceeding in Japanese
20. (2007/02/13) "Dimer, Coamoeba and Homological Mirror Symmetry" , The 3rd COE Conference for Young Researchers , Feb. 13-16, Hokkaido Univ., abstract
    • Proceeding, in Hokkaido University technical report series in mathematics, No.117, pp20-24
21. (2007/01/26) "Brane Tilings and Homological Mirror Symmetry", seminar at KIAS
    • 1st Asian winter school on string theory -- Geometry, Holography and Black Holes, Jan. 8-19, KIAS
    • Visiting KIAS, Jan. 20-27

2006

1. (2006/12/06) "Brane tilings and homological mirror symmetry", Seminar at Tokyo Institute of Technology, abstract, transparency (pdf)
2. (2006/10/27) "Sasaki-Einstein manifolds and Z-minimization as geometric dual of a-maximization", Invited talk at the 12th International Symposium on Complex Geometry, Oct. 25-28, Sugadaira,
3. (2006/09/22) "Brane tilings and algae", seminar at research group for mathematical physics at Osaka City University, abstract in Japanese, transparency
4. (2006/09/21) Kazushi Ueda and Masahito Yamazaki
   • "Brane Tilings and McKay Quivers", abstract and slide in Japanese
   • "Algae of Laurent Polynomials with Triangle Newton Polygons", abstract and slide in Japanese
   Autumn Meeting of Japanese Mathematical Society, Sep. 2006, Osaka City Univ.
5. (2006/09/14) Poster Contribution, YITP workshop--- String Theory and Quantum Field Theory", Sep. 12-16, abstract,
   • Poster, 1st page, 2nd page
   • Slide for 1-min. presentation
   • Proceeding, published in Soryushiron Kenkyu 114, No.6, F94 (2007)
6. (2006/08/09) "Brane Tilings and Quiver Gauge Theories", Summer School for Students 2006, Kijimadaira, Aug. 05-10, abstract in Japanese
7. (2006/02/23) Review on brane tilings, special lecture 2006 at University of Shizuoka "Kerr Black Hole and Sasaki-Einstein Geometry" by Prof. Yasui, Feb. 21-23

2005

1. (2005/11/??) Duality Seminar at Hongo, based on "Quivers, tilings, branes and rhombi", hep-th/0511063
2. (2005/09/??) Short informal talk on a-maximization, Sasaki-Einstein and brane tilings, Infinite Analysis seminar at Tambara
3. (2005/03/04) "Khovanov (co)homology and Topological Strings", Seminar at Padova Univ.,
4. (2005/02/22) Duality Seminar at Hongo, "Khovanov (co)homology and Topological Strings", based on hep-th/0412243

Other Schedules

2014

1. New Methods in Nonperturbative Quantum Field Theory, KITP

2013

1. Mathematics of Superconformal Field Theory, Aspen Center for Physics
2. Kavli IPMU Workshop on Gauge and String Theory.

2012

1. Invited to Integrability in Modern Theoretical and Mathematical Physics, Simons Center for Geometry and Physics, Stony Brook
2. Co-organizer of the conference "Entanglement in Discrete and Continuous Quantum Systems", October 25-26, PCTS, Princeton.
3. Invited to Mathematics and Physics of Moduli Spaces, Heidelberg, Sep 24-28, 2012.

2011

1. Co-organizing a workshop Exact Methods in Gauge/String Theories, PCTS, Princeton, Nov. 11-12, 2011 (slides and videos)
2. Invited to New Recursion Formulae and Integrability for Calabi-Yau Spaces, Banff International Research Station, Oct. 16-21
3. Invited to Real Enumerative Questions in Complex and Tropical Geometry, Mathematisches Forschungsinstitut Oberwolfach, Apr. 17-23

2010

1. Visiting Berkeley Center for Theoretical Physics, Sep. 29-Oct. 6
2. Visiting Princeton Center for Theoretical Science, partly participating in PiTP 2010, Aspects of Supersymmetry, IAS, Jul. 26-Aug. 7
3. Visiting Aspen Center for Physics, "New Mathematical Methods in Quantum Gauge Theories", Jul. 4-25
4. A talk for high school students, Nagoya, Jun. 6
5. Visiting Imperial College, London and City College, London, "16 supersymmetries - a Half-way Meeting in the City", May 12-14
6. Visiting Berkeley Center for Theoretical Physics, Mar. 10-16

2009

1. Invited to Princeton University, Dec. 2-4
2. String Theory, Centro de Ciencias de Benasque Pedro Pascual, Jun. 29- Jul. 10
3. Strings 2009, Rome, Jun. 22-26
4. Supersymmetry and Complex Geometry, IPMU, Jan 4-9

2008

1. Focus week on quantum black holes, IPMU, Sep. 12-16
2. Strings 2008, CERN, Aug. 18-23
3. PITP2008 "Strings and Phenomenology", Princeton, July 14-25
4. 30 Years of Mathematical Methods in High Energy Physics, RIMS, Mar. 17-19
5. Opening Symposium for Institute for the Physics and Mathematics of the Universe, Kashiwa, Mar. 11-12
6. Superstring Theory and the Universe, Onomichi, Feb. 11-13
7. The 2nd Asian Winter School on String Theory, Kusatsu, Jan. 15-25
8. New developments in Algebraic Geometry, Integrable Systems and Mirror symmetry, RIMS, Jan. 7-11

2007

1. Summer Institute 2007, Fuji-Yoshida, Aug. 3-10
2. Link homology and categorification, RIMS, May 14-18
3. Spring School on Superstring Theory and Related Topics, ICTP, Mar. 21-30
4. Komaba2007, Komaba, Feb. 10-11

2006

1. YITP workshop, Fundamental Problems and Application of Quantum Field Theory, Dec. 14-16.
2. Prospects of theories of integrable systems, RIMS, Aug. 21-23
3. Workshop on Mathematical Aspects of Topological Strings, Hokkaido Univ., Jul. 25-27

Last modified on Saturday, 25-May-2013 20:05:04 EDT