Format the instance as RFC 3339.
(self)
| 434 | return self._to_string("rfc2822") |
| 435 | |
| 436 | def to_rfc3339_string(self) -> str: |
| 437 | """ |
| 438 | Format the instance as RFC 3339. |
| 439 | """ |
| 440 | return self._to_string("rfc3339") |
| 441 | |
| 442 | def to_rss_string(self) -> str: |
| 443 | """ |