| Date: | 2021-07-20 |
| Time: | 1717:43 |
| Geyser: | Old Faithful |
| Webcam: | Yes |
| Initial: | No |
| Long/Short: | Long |
| Duration: | ≥3m54s |
| Time Entered: | 2021-07-20 17:18:10 |
| Time Updated: | 2021-07-20 17:23:57 |
| Time Uploaded: | 2021-07-20 17:23:56 |
| Entrant: | JarnoO |
| Observer: | |
| Submitted to: | Geysertimes.org |
| Comments: | prediction GT 1709 |