| Date | Change Type | Time Delta (hours) | Reason |
| Dec 01, 2017 | OBSERVER_REQUESTED | -2.3 | As per November 30, 2017 email from Stefanie Milam |
| Jan 24, 2018 | OBSERVER_REQUESTED | -0.5 | as per January 24, 2018 email from Stefanie Milam |
| Dec 19, 2020 | OVERHEAD_CHANGE | +0.2 | APT 2020.5 |
| Sep 15, 2022 | OVERHEAD_CHANGE | -0.3 | APT 2022.5.3 |
| Sep 17, 2022 | FAILURE_REPEAT | +3.4 | Time credit from skipped observations 3 and 4 of program 1252 |
| Nov 18, 2022 | OVERHEAD_CHANGE | +0.2 | APT 2022.7.1 |
| Dec 03, 2022 | OBSERVER_REQUESTED | +0.4 | GTO |
| Dec 28, 2022 | OVERHEAD_CHANGE | +1.7 | Splitting observations for guide stars |
| Mar 02, 2023 | SKIPPED_REPEAT | +2.7 | WOPR 88711 |
