| Date | Change Type | Time Delta (hours) | Reason |
| Feb 05, 2018 | ADMINISTRATION | 0.0 | Updating total allocation. |
| Feb 06, 2018 | OBSERVER_REQUESTED | 0.0 | Allocated time should be 12.74 |
| Feb 06, 2018 | OBSERVER_REQUESTED | +0.1 | Actual allocation is 12.74 |
| Apr 01, 2020 | OBSERVER_REQUESTED | -1.8 | PI adjusted allocation |
| Apr 16, 2020 | OBSERVER_REQUESTED | +0.1 | PI requested increase in allocation. |
| Dec 19, 2020 | OVERHEAD_CHANGE | +1.0 | APT 2020.5 |
| Jul 01, 2021 | OVERHEAD_CHANGE | +0.3 | APT 2021.2 |
| Sep 25, 2021 | OVERHEAD_CHANGE | +0.1 | PRDOPSSOC-040 |
| Sep 15, 2022 | OVERHEAD_CHANGE | -0.1 | APT 2022.5.3 |
| Oct 05, 2022 | STSCI_RECOMMENDATION | +0.7 | Increased allocation for STScI recommended background observation |
| Nov 18, 2022 | OVERHEAD_CHANGE | +0.2 | APT 2022.7.1 |
