| date | instrument | campaign | notes |
| 2003 Dec 1 - 7 | IRAC | 1 | |
| 2003 Dec 8 - 13 | MIPS | 1 | |
| 2003 Dec 14 - 17 | IRS | 1 | |
| 2003 Dec 18 - 28 | IRAC | 2 | |
| 2003 Dec 29 - 2004 Jan 3 | MIPS | 2 | |
| 2004 Jan 4 - 9 | IRS | 2 | |
| 2004 Jan 9 - 21 | IRAC | 3 | |
| 2004 Jan 21 - Feb 3 | MIPS | 3 | (note added 7 Jan 04 - this campaign was extended) |
| 2004 Feb 4 - Feb 8 | IRS | 3 | |
| 2004 Feb 9 - 19 | IRAC | 4 | |
| 2004 Feb 20 - 26 | MIPS | 4 | |
| 2004 Feb 27 - Mar 5 | IRS | 4 | |
| 2004 Mar 6 - 14 | IRAC | 5 | |
| 2004 Mar 14 - 22 | MIPS | 5 | |
| 2004 Mar 22 - 28 | IRS | 5 | |
| 2004 Mar 28 - Apr 6 | IRAC | 6 | |
| 2004 Apr 6 - 14 | MIPS | 6 | |
| 2004 Apr 14 - 19 | IRS | 6 | |
| 2004 Apr 20 - May 1 | IRAC | 7 | |
| 2004 May 2 - 11 | MIPS | 7 | |
| 2004 May 11 - 16 | IRS | 7 | |
| 2004 May 16 - 27 | IRAC | 8 | |
| 2004 May 28 - Jun 4 | MIPS | 8 | |
| 2004 Jun 5 - 8 | IRS | 8 | |
| 2004 Jun 9 - 11 | IRAC | 9 | Spitzer entered
Safe Mode on June 10, 2004. |
| 2004 Jun 18 | IRAC | 9' | Operations resumed on June 18 (UT). |
| 2004 Jun 18 - 23 | MIPS | 9 | |
| 2004 Jun 24 - 28 | IRS | 9 | |
| 2004 Jun 29 - Jul 7 | IRAC | 10 | |
| 2004 Jul 8 - 12 | MIPS | 10 | |
| 2004 Jul 13 - 18 | IRS | 10 | |
| 2004 Jul 19 - 28 | IRAC | 11 | |
| 2004 Jul 29 - Aug 6 | MIPS | 11 | |
| 2004 Aug 7 - 11 | IRS | 11 | |
| 2004 Aug 12 - 18 | IRAC | 12 | |
| 2004 Aug 19 - 26 | MIPS | 12 | |
| 2004 Aug 26 - Sep 1 | IRS | 12 | |
| 2004 Sep 2 - 13 | IRAC | 13 | |
| 2004 Sep 14 - 25 | MIPS | 13 | |
| 2004 Sep 26 - Oct 4 | IRS | 13 | |
| 2004 Oct 5 - 12 | IRAC | 14 | |
| 2004 Oct 13 - 19 | MIPS | 14 | |
| 2004 Oct 20 - 26 | IRS | 14 | |
| 2004 Oct 27 - Nov 1 | IRAC | 15 | |
| 2004 Nov 2 - 10 | MIPS | 15 | |
| 2004 Nov 11 - 17 | IRS | 15 | |
| 2004 Nov 18 - 28 | IRAC | 16 | |
| 2004 Nov 29 - Dec 7 | MIPS | 16 | |
| 2004 Dec 8 - 14 | IRS | 16 | |
| 2004 Dec 15 - 21 | IRAC | 17 | |
| 2004 Dec 22 - 2005 Jan 2 | MIPS | 17 | |
| 2005 Jan 3 - 15 | IRS | 17 | |
| 2005 Jan 16 - 22 | IRAC | 18 | |
| 2005 Jan 23 - Feb 3 | MIPS | 18 | |
| 2005 Feb 4 - 17 | IRS | 18 | |
| 2005 Feb 18 - 25 | IRAC | 19 | |
| 2005 Feb 26 - Mar 10 | MIPS | 19 | |
| 2005 Mar 11 - 24 | IRS | 19 | |
| 2005 Mar 25 - 31 | IRAC | 20 | |
| 2005 Apr 1 - 13 | MIPS | 20 | |
| 2005 Apr 14 - Apr 24 | IRS | 20 | |
| 2005 Apr 25 - May 5 | | | off due to safing |
| 2005 May 6 - 10 | IRAC | 21 | |
| 2005 May 11 - 20 | MIPS | 21 | |
| 2005 May 21 - Jun 8 | IRS | 21 | May 28 is single MIPS day for engineering tests |
| 2005 Jun 9 - 15 | IRAC | 22 | |
| 2005 Jun 16 - 29 | MIPS | 22 | |
| 2005 Jun 30 - Jul 14 | IRS | 22 | |
| 2005 Jul 15 - 26 | IRAC | 23 | |
| 2005 Jul 27 - Aug 3 | MIPS | 23 | |
| 2005 Aug 4 - 17 | IRS | 23 | Aug 7 is single MIPS day for engineering tests |
| 2005 Aug 18 - 25 | IRAC | 24 | |
| 2005 Aug 26 - Sep 5 | MIPS | 24 | |
| 2005 Sep 6 - 14 | IRS | 24 | |
| 2005 Sep 15 - 23 | IRAC | 25 | |
| 2005 Sep 24 - Oct 9 | MIPS | 25 | |
| 2005 Oct 10 - 20 | IRS | 25 | |
| 2005 Oct 21 - Nov 2 | IRAC | 26 | |
| 2005 Nov 3 - 13 | MIPS | 26 | |
| 2005 Nov 14 - 23 | IRS | 26 | |
| 2005 Nov 24 - 30 | IRAC | 27 | |
| 2005 Dec 1 - 8 | MIPS | 27 | |
| 2005 Dec 9 - 10 | IRAC | 27-a | |
| 2005 Dec 11 - 22 | IRS | 27 | |
| 2005 Dec 23 - 2006 Jan 5 | IRAC | 28 | |
| 2006 Jan 6 - 13 | MIPS | 28 | |
| 2006 Jan 14 - Feb 3 | IRS | 28 | |
| 2006 Feb 4 - 13 | IRAC | 29 | |
| 2006 Feb 14 - Mar 3 | MIPS | 29 | |
| 2006 Mar 4 - 22 | IRS | 29 | |
| 2006 Mar 23 - 29 | IRAC | 30 | |
| 2006 Mar 30 - Apr 15 | MIPS | 30 | |
| 2006 Apr 16 - 26 | IRS | 30 | |
| 2006 Apr 27 - May 3 | IRAC | 31 | |
| 2006 May 4 - 10 | MIPS | 31 | |
| 2006 May 11 - 31 | IRS | 31 | |
| 2006 Jun 1 - 5 | IRAC | 32 | |
| 2006 Jun 6 - 18 | MIPS | 32 | |
| 2006 Jun 19 - Jul 5 | IRS | 32 | |
| 2006 Jul 6 - 12 | IRAC | 33 | |
| 2006 Jul 13 - 23 | MIPS | 33 | |
| 2006 Jul 24 - Aug 7 | IRS | 33 | |
| 2006 Aug 8 - 14 | IRAC | 34 | |
| 2006 Aug 15 - Sep 5 | MIPS | 34 | MIPS warm campaign;
no 160 um observations. Safing at 21:55:17 on Aug 18 (Resumed at 21:13 UT on Aug
31). |
| 2006 Sep 6 - 18 | IRS | 34 | |
| 2006 Sep 19 - 29 | IRAC | 35 | |
| 2006 Sep 29 - Oct 16 | MIPS | 35 | MIPS warm campaign; no 160 um observations |
| 2006 Oct 17 - 25 | IRS | 35 | |
| 2006 Oct 26 - Nov 1 | IRAC | 36 | |
| 2006 Nov 2 - 8 | MIPS | 36 | MIPS warm campaign; no 160 um observations |
| 2006 Nov 9 -21 | IRS | 36 | |
| 2006 Nov 22 - 30 | IRAC | 37 | |
| 2006 Dec 1 - 8 | MIPS | 37 | MIPS warm campaign; no 160 um observations |
| 2006 Dec 9 - 24 | IRS | 37 | |
| 2006 Dec 25 - 31 | IRAC | 38 | |
| 2006 Dec 31 - 2007 Jan 23 | MIPS | 38 | MIPS cold campaign |
| 2007 Jan 24 - Feb 13 | IRS | 38 | |
| 2007 Feb 14 - 21 | IRAC | 39 | |
| 2007 Feb 22 - Mar 7 | MIPS | 39 | MIPS cold campaign |
| 2007 Mar 8 - 28 | IRS | 39 | |
| 2007 Mar 29 - Apr 4 | IRAC | 40 | |
| 2007 Apr 5 - 15 | MIPS | 40 | MIPS cold campaign |
| 2007 Apr 16 - May 5 | IRS | 40 | |
| 2007 May 6 - 16 | IRAC | 41 | |
| 2007 May 17 - Jun 6 | MIPS | 41 | MIPS cold campaign |
| 2007 Jun 7 - 27 | IRS | 41 | |
| 2007 Jun 28 - Jul 4 | IRAC | 42 | |
| 2007 Jul 5 - 25 | MIPS | 42 | MIPS cold campaign |
| 2007 Jul 26 - Aug 6 | IRS | 42 | |
| 2007 Aug 7 - 16 | IRAC | 43 | |
| 2007 Aug 17 - 27 | MIPS | 43 | |
| 2007 Aug 28 - Sep 7 | IRS | 43 | |
| 2007 Sep 8 - 14 | IRAC | 44 | |
| 2007 Sep 15 - 29 | MIPS | 44 | MIPS cold campaign |
| 2007 Sep 30 - Oct 15 | IRS | 44 | |
| 2007 Oct 16 - 23 | IRAC | 45 | |
| 2007 Oct 24 - 29 | MIPS | 45 | |
| 2007 Oct 30 - Nov 12 | IRS | 45 | |
| 2007 Nov 13 - 26 | IRAC | 46 | |
| 2007 Nov 27 - Dec 4 | MIPS | 46 | |
| 2007 Dec 5 - 21 | IRS | 46 | |
| 2007 Dec 22 - 31 | IRAC | 47 | |
| 2008 Jan 1 - 9 | MIPS | 47 | MIPS cold campaign |
| 2008 Jan 10 - 22 | IRS | 47 | |
| 2008 Jan 23 - Feb 6 | IRAC | 48 | |
| 2008 Feb 7 - 18 | MIPS | 48 | |
| 2008 Feb 19 - Mar 1 | IRS | 48 | |
| 2008 Mar 2 - 11 | IRAC | 49 | |
| 2008 Mar 12 - 18 | MIPS | 49 | |
| 2008 Mar 19 - Apr 5 | IRS | 49 | IRS/CE anomaly |
| 2008 Apr 6 - 13 | IRAC | 50 | |
| 2008 Apr 14 - 20 | MIPS | 50 | MIPS cold campaign |
| 2008 Apr 21 - May 7 | IRS | 50 | |
| 2008 May 8 - 14 | IRAC | 51 | |
| 2008 May 15 - 21 | MIPS | 51 | |
| 2008 May 22 - June 9 | IRS | 51 | |
| 2008 Jun 10 - 19 | IRAC | 52 | |
| 2008 Jun 20 - 28 | MIPS | 52 | MIPS cold campaign |
| 2008 Jun 29 - Jul 11 | IRS | 52 | |
| 2008 Jul 12 - 22 | IRAC | 53 | |
| 2008 Jul 23 - Aug 1 | MIPS | 53 | |
| 2008 Aug 2 - 15 | IRS | 53 | |
| 2008 Aug 16 - 26 | IRAC | 54 | |
| 2008 Aug 27 - Sep 5 | MIPS | 54 | MIPS cold campaign |
| 2008 Sep 6 - 19 | IRS | 54 | |
| 2008 Sep 20 - 24 | IRAC | 55 | |