| Date | Change Type | Time Delta (hours) | Reason |
| Jan 02, 2018 | OBSERVER_REQUESTED | +1.8 | as per January 2, 2018 email from Santiago Arribas |
| Jan 30, 2018 | OBSERVER_REQUESTED | +1.1 | as per January 29, 2018 email from Pierre Ferruit |
| Apr 01, 2020 | OBSERVER_REQUESTED | +6.9 | Time allocation readjusted by observer |
| Jun 11, 2020 | OVERHEAD_CHANGE | -0.1 | APT 2020.3 |
| Dec 19, 2020 | OVERHEAD_CHANGE | +3.7 | APT 2020.5 |
| Sep 25, 2021 | OVERHEAD_CHANGE | +0.1 | PRDOPSSOC-040 |
| Feb 12, 2022 | OVERHEAD_CHANGE | -0.1 | APT 2022.1 |
| May 17, 2022 | OVERHEAD_CHANGE | +0.1 | APT 2022.3 |
| Aug 20, 2022 | OVERHEAD_CHANGE | +0.3 | APT 2022.5.1 |
| Sep 15, 2022 | OVERHEAD_CHANGE | -1.7 | APT 2022.5.3 |
| Nov 18, 2022 | OVERHEAD_CHANGE | +1.9 | APT 2022.7.1 |
| Feb 24, 2023 | OVERHEAD_CHANGE | -0.6 | APT 2023.1.1 |
