| Date: | 2015-12-17 |
| Time: | 0828 |
| Geyser: | Old Faithful |
| Webcam: | Yes |
| Initial: | No |
| Long/Short: | Long |
| Duration: | 3.5-3.75m |
| Time Entered: | 2015-12-17 08:28:25 |
| Time Updated: | 2015-12-17 10:33:16 |
| Time Uploaded: | 2015-12-17 08:32:52 |
| Entrant: | JSJ |
| Observer: | James St. John |
| Submitted to: | Geysertimes.org |
| Comments: | Preplay low spouting at 0821, 0824, and late 0827. Eruption start at earliest 0828. Done at 0831. |