| Date: | 2017-12-19 |
| Time: | 0835 |
| Geyser: | Castle |
| Webcam: | Yes |
| Initial: | No |
| Major/Minor: | Major |
| Duration: | |
| Time Entered: | 2017-12-19 22:41:55 |
| Time Uploaded: | 2017-12-19 22:41:55 |
| Entrant: | JSJ |
| Observer: | James St. John |
| Submitted to: | Geysertimes.org |
| Comments: | Time from GOSA playback. Eruption start at ~latest 0835. |