| Date: | 2021-07-20 |
| Time: | 1350 |
| Geyser: | Old Faithful |
| Webcam: | Yes |
| Initial: | No |
| Long/Short: | Long |
| Duration: | ~4m06s |
| Standardized Duration: | ~4m 6s |
| Time Entered: | 2021-07-20 13:51:04 |
| Time Updated: | 2021-07-20 14:04:24 |
| Time Uploaded: | 2021-07-20 14:04:26 |
| Entrant: | JarnoO |
| Observer: | |
| Submitted to: | Geysertimes.org |
| Comments: | prediction GT & NPS 1352; 1350:24 within 5 seconds of start, duration includes these 5 seconds |