| Date: | 2021-07-20 |
| Time: | 1215:11 |
| Geyser: | Old Faithful |
| Webcam: | Yes |
| Initial: | No |
| Long/Short: | Long |
| Duration: | 3m43s |
| Standardized Duration: | 3m 43s |
| Time Entered: | 2021-07-20 12:16:00 |
| Time Updated: | 2021-07-20 12:24:04 |
| Time Uploaded: | 2021-07-20 12:24:03 |
| Entrant: | JarnoO |
| Observer: | |
| Submitted to: | Geysertimes.org |
| Comments: | prediction GT 1216 | NPS 1215 |