LAUNCH OF JAXA’S XRISM AND SLIM SPACECRAFT, Sept 6, 2023, Tanegashima, Japan, 7:42 pm EDT (Sept 7, 8:42 am in Japan) Livestream begins 7:10 pm EDT

Update, September 4:  The launch has been rescheduled for September 7, 08:42:11 Japan Standard Time (September 6, 7:42:11 Eastern Daylight Time).  The livestream will begin at 7:10 pm EDT.

New launch date set for the H-IIA Launch Vehicle No. 47 with XRISM and SLIM onboard: Sept. 7 at 8:42:11 JST (Sept. 6 at 19:42:11 EDT). https://t.co/SL6lL3Pygt

— JAXA Washington DC (@jaxa_wdc) September 4, 2023

Update, August 27, 8:10 pm ET:  JAXA and MHI Launch Services just scrubbed the launch, about 10 minutes after the livestream began (so about 20 minutes before launch), due to bad weather.

Update, August 25: The launch has been delayed again due to continued bad weather. The new date/time are August 27, 8:26:22 pm EDT (August 28, 9:26:22 am JST).  Livestream begins August 27 7:55 pm EDT. Watch at: https://www.youtube.com/watch?v=3TTTJ20iRbs

Update, August 24: The launch date has slipped a day due to bad weather. Launch now is scheduled for August 26, 8:30:15 pm EDT (August 27, 9:30:15 am JST).

Update, August 23: JAXA’s livestream will begin at August 25 at 8:00 pm EDT (9:00 am August 26 JST).

The live coverage of the launch of the X-Ray Imaging and Spectroscopy Mission (#XRISM) and the Smart Lander for Investigating Moon (#SLIM) onboard the H-IIA Launch Vehicle will start around 9:00 am (JST)/0:00 am (UTC) on August 26.
Please join us on:https://t.co/ohHy9rrwMy

— JAXA(Japan Aerospace Exploration Agency) (@JAXA_en) August 23, 2023

Update, August 4:  The launch is scheduled for August 26, 9:34:57 am Japan Standard Time, which is August 25 8:34:57 pm Eastern Daylight Time.  The press kit for XRISM (pronounced Chrism) is now available.

Original Entry: The Japan Aerospace Exploration Agency plans to launch the X-Ray Imaging and Spectroscopy Mission (XRISM) x-ray telescope and the Smart Lander for Investigating Moon (SLIM) lunar lander on an H-IIA rocket from Tanageshima on August 26, 2023. The launch window is open through September 15.

[Press Release]
The Launch Schedule Announcement for the X-ray Imaging and Spectroscopy Mission (XRISM) and the Smart Lander for Investigating Moon (SLIM) onboard the H-IIA Launch Vehicle No. 47 (H-IIA F47)　https://t.co/GgkpsjYLk4

— JAXA(Japan Aerospace Exploration Agency) (@JAXA_en) July 11, 2023

More information will be provided about this launch when it is available.