Currently, we have several spare parts handling jiff::Timestamp and related datetime logics.

Some of them are located at jiff_util.rs while others are inlined, so you can search jiff:: to find them.

To handle datetime logic modular and centralized, we can follow how reqsign encapsulates it:

• https://github.com/apache/opendal-reqsign/blob/60d1ca93/core/src/time.rs
• refactor: chrono to jiff opendal-reqsign#634

This should be easy to follow so I mark it as a good first issue. Feel free to take it over and submit a patch for review.