| Date: | 2021-05-21 |
| Time: | 1721:09 |
| Geyser: | Old Faithful |
| Webcam: | Yes |
| Initial: | No |
| Long/Short: | Long |
| Duration: | >3m42s |
| Standardized Duration: | >3m 42s |
| Time Entered: | 2021-05-21 17:21:31 |
| Time Updated: | 2021-05-21 17:28:32 |
| Time Uploaded: | 2021-05-21 17:28:28 |
| Entrant: | JarnoO |
| Observer: | |
| Submitted to: | Geysertimes.org |
| Comments: | prediction GT 1727 | NPS 1525 |