The sequence of dates for the current second (and final) in-flight Announcement of Opportunity (AO) for Herschel Open Time (OT2) is as follows:
9 June 2011: The Herschel OT2 Announcement of Opportunity is issued. Phase 1 OT2 proposals can be submitted.
20-21 June 2011: A Herschel Observation Planning Workshop will be organised by the HSC in ESAC, Madrid, and simultaneously by the NHSC in IPAC, Pasadena, CA.
15 September 2011 12:00 UT: Submission deadline for Phase 1 OT2 proposals. Start of technical and HOTAC evaluation process for these proposals.
23 September 2011: Submission deadline for NASA Data Analysis (DA) funding for investigators based in the USA only, see Chapter 12, Special information for US-based investigators.
8-11 November 2011: HOTAC meeting, after which the recommendation regarding OT2 proposal time allocation will be provided to ESA's Director of Science and Robotic Exploration (D/SRE) for final decision.
24 November 2011: Announcement of approved OT2 proposals and start of Phase 2 data entry.
Note that 12:00 UT refers to 12:00 hours (noon) Universal Time (UT=GMT). Central European Summer Time (CEST) is UT+2 hours on 15 September 2011.
The current AO process is the final call for Herschel observing programmes.