| # | Start Date | End Date | Relative Delta |
|---|---|---|---|
| 1 | 2021-02-28 | 2021-03-28 | months=1 |
| 2 | 2021-02-28 | 2021-03-29 | months=1, days=1 |
| 3 | 2021-02-28 | 2021-03-30 | months=1, days=2 |
| 4 | 2021-02-28 | 2021-03-31 | months=1, days=3 |
| 5 | 2021-02-28 | 2021-01-28 | months=-1 |
| 6 | 2021-02-28 | 2021-04-28 | months=2 |
| 7 | 2021-02-28 | 2021-05-28 | months=3 |
| 8 | 2021-02-28 | 2022-02-28 | years=1 |
| 9 | 2021-02-28 | 2024-02-28 | years=3 |