| From | To | Comment |
| 2009-09-30 | 2010-03-31 | Start of operations with instrument name SHOOT. |
| 2010-04-01 | 2012-03-31 | Operations with instrument name XSHOO. The calibration plan and the rule set are the same as in the first year of operations. |
| 2012-04-01 | 2013-03-31 | Operations with the new K-band supressing slits in the NIR-arm requires a new set of rules. Each NIR-arm slit has its own SPECTRAL_FORMAT_TAB static calibration. The rule set accounts also for the new way NIR-arm dark calibration are acquired. |
| 2013-04-01 | present | VIS-arm telluric standard stars were previously taken in stare mode matching the read mode of the science and are now acquired in nodding mode with one fixed read mode only. |