| Date: | 2021-07-12 |
| Time: | 1216:56 |
| Geyser: | Old Faithful |
| Webcam: | Yes |
| Initial: | No |
| Long/Short: | Long |
| Duration: | 4m12s |
| Standardized Duration: | 4m 12s |
| Time Entered: | 2021-07-12 12:17:51 |
| Time Updated: | 2021-07-12 12:24:54 |
| Time Uploaded: | 2021-07-12 12:24:55 |
| Entrant: | JarnoO |
| Observer: | |
| Submitted to: | Geysertimes.org |
| Comments: | prediction GT 1214 | NPS 1211 |