- Phase 0 (2005 July & 2005 August), for initial operation and in-orbit checkout.
- Phase I (2005 September - 2006 March), when the observing time belongs exclusively to the Suzaku Science Working Group (SWG).
- Phase II (2006 April - end of mission), when the observing time is open to the astronomical community world-wide.
We anticipate proposals will be solicited and selected on an annual basis during Phase II.
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