| Date | Change Type | Time Delta (hours) | Reason |
| Jan 02, 2018 | OBSERVER_REQUESTED | +1.7 | as per January 2, 2018 email from Santiago Arribas |
| Jan 30, 2018 | OBSERVER_REQUESTED | -4.0 | as per January 29, 2018 email from Pierre Ferruit |
| Apr 13, 2020 | OBSERVER_REQUESTED | +2.9 | PI requested additional hours for program |
| Apr 13, 2020 | OBSERVER_REQUESTED | +0.4 | Requested by PI |
| Jun 11, 2020 | OVERHEAD_CHANGE | +0.1 | APT 2020.3 |
| Dec 19, 2020 | OVERHEAD_CHANGE | +0.5 | APT 2020.5 |
| Jul 01, 2021 | OVERHEAD_CHANGE | -0.1 | APT 2021.2 |
| May 17, 2022 | OVERHEAD_CHANGE | +0.1 | APT 2022.3 |
| Jun 23, 2022 | OVERHEAD_CHANGE | +0.5 | PRDOPSSOC-053 |
| Aug 20, 2022 | OVERHEAD_CHANGE | +0.1 | APT 2022.5.1 |
| Sep 15, 2022 | OVERHEAD_CHANGE | -0.3 | APT 2022.5.3 |
| Nov 18, 2022 | OVERHEAD_CHANGE | +0.4 | APT 2022.7.1 |
| Jul 10, 2023 | TRANSFER | +2.5 | GTO PI taking additional 2.5 hours from Gillian Wright GTO pool |
