These are the last FORS1 files evaluated from QC1 ops logs: 

ARC_FILE                      MJD_OBS      REPORT
=============================================================
FORS1.2008-11-20T21:14:24.188 54790.885002 BIAS
FORS1.2008-11-20T10:49:09.738 54790.450807 RESOL_LSS
FORS1.2008-11-20T10:49:09.738 54790.450807 WLEN_LSS
FORS1.2008-11-20T11:06:12.083 54790.462640 RESOL_MOS
FORS1.2008-11-20T11:06:12.083 54790.462640 WLEN_MOS
FORS1.2008-11-14T12:47:13.149 54784.532791 LAMP_CHECK
FORS1.2008-11-19T23:57:05.835 54789.997984 ZEROPOINT
FORS1.2008-11-18T09:53:54.527 54788.412437 SCR_FLAT

Last OPSLOG ftp: 2008-11-20T23:27:20 (local)
Last parser    : 2008-11-20T23:03:22 (UT)
Time difference: 1 (h)