Grand Geyser Eruptions Time and Date Interval 01/01/00 05:59:14, 0:00:00 01/01/00 17:14:14, 11:15:00 01/02/00 04:29:14, 11:15:00 01/02/00 17:17:14, 12:48:00 01/03/00 04:44:14, 11:27:00 01/03/00 19:17:14, 14:33:00 01/04/00 05:53:14, 10:36:00 01/04/00 16:44:14, 10:51:00 01/05/00 01:47:14, 9:03:00 01/05/00 11:32:14, 9:45:00 01/05/00 20:17:14, 8:45:00 01/06/00 08:02:14, 11:45:00 01/06/00 18:35:14, 10:33:00 01/07/00 04:11:14, 9:36:00 01/07/00 15:02:14, 10:51:00 01/08/00 00:59:14, 9:57:00 01/08/00 10:05:14, 9:06:00 01/08/00 21:08:14, 11:03:00 01/09/00 08:14:14, 11:06:00 01/09/00 16:59:14, 8:45:00 01/10/00 02:26:14, 9:27:00 01/10/00 11:02:14, 8:36:00 01/10/00 19:32:14, 8:30:00 01/11/00 05:47:14, 10:15:00 01/11/00 15:08:14, 9:21:00 01/11/00 23:23:14, 8:15:00 01/12/00 06:14:14, 6:51:00 01/12/00 16:29:14, 10:15:00 01/13/00 04:17:14, 11:48:00 01/13/00 13:44:14, 9:27:00 01/14/00 02:02:14, 12:18:00 01/14/00 11:44:14, 9:42:00 01/14/00 22:29:14, 10:45:00 01/15/00 08:26:14, 9:57:00 01/15/00 19:32:14, 11:06:00 01/16/00 06:44:14, 11:12:00 01/16/00 16:20:14, 9:36:00 01/17/00 03:59:14, 11:39:00 01/17/00 14:17:14, 10:18:00 01/18/00 01:08:14, 10:51:00 01/18/00 12:56:14, 11:48:00 01/19/00 00:26:14, 11:30:00 01/19/00 12:02:14, 11:36:00 01/19/00 23:32:14, 11:30:00 01/20/00 13:29:14, 13:57:00 01/21/00 01:32:14, 12:03:00 01/21/00 12:32:14, 11:00:00 01/22/00 00:29:14, 11:57:00 01/22/00 11:47:14, 11:18:00 01/22/00 21:44:14, 9:57:00 01/23/00 09:38:14, 11:54:00 01/23/00 22:32:14, 12:54:00 01/24/00 10:14:14, 11:42:00 01/24/00 19:56:14, 9:42:00 01/25/00 08:05:14, 12:09:00 01/25/00 18:32:14, 10:27:00 01/26/00 06:29:14, 11:57:00 01/26/00 17:17:14, 10:48:00 01/27/00 06:05:14, 12:48:00 01/27/00 18:56:14, 12:51:00 01/28/00 03:32:14, 8:36:00 01/28/00 14:47:14, 11:15:00 01/29/00 03:14:14, 12:27:00 01/29/00 15:02:14, 11:48:00 01/30/00 00:32:14, 9:30:00 01/30/00 11:44:14, 11:12:00 01/30/00 21:59:14, 10:15:00 01/31/00 07:56:14, 9:57:00 01/31/00 20:20:14, 12:24:00 02/01/00 06:50:14, 10:30:00 02/01/00 19:44:14, 12:54:00 02/02/00 05:02:14, 9:18:00 02/02/00 16:38:14, 11:36:00 02/03/00 03:20:14, 10:42:00 02/03/00 15:14:14, 11:54:00 02/04/00 01:32:14, 10:18:00 02/04/00 14:05:14, 12:33:00 02/05/00 02:08:14, 12:03:00 02/05/00 15:02:14, 12:54:00 02/06/00 02:56:14, 11:54:00 02/06/00 16:17:14, 13:21:00 02/07/00 04:17:14, 12:00:00 02/07/00 17:14:14, 12:57:00 02/08/00 05:44:14, 12:30:00 02/08/00 17:59:14, 12:15:00 02/09/00 04:11:14, 10:12:00 02/09/00 16:17:14, 12:06:00 02/10/00 02:56:14, 10:39:00 02/10/00 12:23:14, 9:27:00 02/10/00 23:23:14, 11:00:00 02/11/00 11:23:14, 12:00:00 02/11/00 23:20:14, 11:57:00 02/12/00 11:11:14, 11:51:00 02/12/00 22:05:14, 10:54:00 02/13/00 09:50:14, 11:45:00 02/13/00 19:47:14, 9:57:00 02/14/00 07:05:14, 11:18:00 02/14/00 19:44:14, 12:39:00 02/15/00 06:59:14, 11:15:00 02/15/00 19:02:14, 12:03:00 02/16/00 08:08:14, 13:06:00 02/16/00 19:20:14, 11:12:00 02/17/00 07:14:14, 11:54:00 02/17/00 17:35:14, 10:21:00 02/18/00 04:59:14, 11:24:00 02/18/00 15:53:14, 10:54:00 02/19/00 03:56:14, 12:03:00 02/19/00 17:35:14, 13:39:00 02/20/00 07:26:14, 13:51:00 02/20/00 18:32:14, 11:06:00 02/21/00 06:38:14, 12:06:00 02/21/00 16:29:14, 9:51:00 02/22/00 05:26:14, 12:57:00 02/22/00 18:29:14, 13:03:00 02/23/00 07:08:14, 12:39:00 02/23/00 17:50:14, 10:42:00 02/24/00 05:26:14, 11:36:00 02/24/00 15:26:14, 10:00:00 02/25/00 04:56:14, 13:30:00 02/25/00 15:14:14, 10:18:00 02/26/00 02:17:14, 11:03:00 02/26/00 15:17:14, 13:00:00 02/27/00 03:47:14, 12:30:00 06/21/00 10:41:21, 0:00:00 06/21/00 22:50:57, 12:09:36 06/22/00 11:52:09, 13:01:12 06/22/00 23:57:21, 12:05:12 06/23/00 12:13:45, 12:16:24 06/24/00 00:30:09, 12:16:24 06/24/00 15:54:08, 15:23:59 06/25/00 06:40:08, 14:46:00 06/25/00 19:24:32, 12:44:24 06/26/00 07:36:08, 12:11:36 06/26/00 19:56:56, 12:20:48 06/27/00 08:03:20, 12:06:24 06/27/00 18:21:44, 10:18:24 06/28/00 07:35:20, 13:13:36 06/28/00 21:47:44, 14:12:24 06/29/00 11:38:08, 13:50:24 06/29/00 23:46:08, 12:08:00 06/30/00 13:32:56, 13:46:48 07/01/00 01:27:44, 11:54:48 07/01/00 16:55:19, 15:27:35 07/02/00 06:54:19, 13:59:00 07/02/00 21:44:19, 14:50:00 07/03/00 10:37:19, 12:53:00 07/03/00 23:40:49, 13:03:30 07/04/00 11:13:49, 11:33:00 07/05/00 02:02:49, 14:49:00 07/05/00 16:13:19, 14:10:30 07/06/00 08:32:19, 16:19:00 07/06/00 22:19:49, 13:47:30 07/07/00 12:46:19, 14:26:30 07/08/00 01:37:49, 12:51:30 07/08/00 14:42:19, 13:04:30 07/09/00 04:49:19, 14:07:00 07/09/00 19:03:19, 14:14:00 07/10/00 08:30:49, 13:27:30 07/10/00 23:52:49, 15:22:00 07/11/00 12:13:19, 12:20:30 07/12/00 02:54:49, 14:41:30 07/12/00 16:03:49, 13:09:00 07/13/00 06:12:49, 14:09:00 07/13/00 20:34:19, 14:21:30 07/14/00 12:25:49, 15:51:30 07/15/00 02:04:19, 13:38:30 07/15/00 14:04:49, 12:00:30 07/16/00 02:41:49, 12:37:00 07/16/00 16:08:00, 13:26:11 07/17/00 06:26:00, 14:18:00 07/17/00 21:01:19, 14:35:19 07/18/00 11:07:49, 14:06:30 07/18/00 23:27:19, 12:19:30 07/19/00 13:21:19, 13:54:00 07/20/00 01:24:49, 12:03:30 07/20/00 15:13:19, 13:48:30 07/21/00 03:20:19, 12:07:00 07/21/00 18:17:19, 14:57:00 07/22/00 07:56:49, 13:39:30 07/22/00 23:25:19, 15:28:30 07/23/00 12:57:00, 13:31:41 07/24/00 00:37:00, 11:40:00 07/24/00 14:34:00, 13:57:00 07/25/00 03:50:00, 13:16:00 07/25/00 15:06:49, 11:16:49 07/26/00 03:26:49, 12:20:00 07/26/00 16:03:49, 12:37:00 07/27/00 06:12:49, 14:09:00 07/27/00 18:50:00, 12:37:11 07/28/00 09:54:00, 15:04:00 07/28/00 23:53:00, 13:59:00 07/29/00 14:20:00, 14:27:00 07/30/00 03:13:00, 12:53:00 07/30/00 11:33:19, 8:20:19 07/30/00 22:14:19, 10:41:00 07/31/00 08:43:19, 10:29:00 07/31/00 17:24:19, 8:41:00 08/01/00 01:13:19, 7:49:00 08/01/00 11:58:00, 10:44:41 08/01/00 19:53:00, 7:55:00 08/02/00 04:33:00, 8:40:00 08/02/00 13:03:49, 8:30:49 08/02/00 21:30:19, 8:26:30 08/03/00 04:57:19, 7:27:00 08/03/00 16:58:19, 12:01:00 08/04/00 01:03:49, 8:05:30 08/04/00 10:26:49, 9:23:00 08/04/00 19:06:19, 8:39:30 08/05/00 03:28:19, 8:22:00 08/05/00 13:12:19, 9:44:00 08/05/00 20:53:19, 7:41:00 08/06/00 06:55:49, 10:02:30 08/06/00 14:31:49, 7:36:00 08/07/00 00:30:19, 9:58:30 08/07/00 12:46:19, 12:16:00 08/07/00 20:12:19, 7:26:00 08/08/00 03:59:19, 7:47:00 08/08/00 14:37:19, 10:38:00 08/08/00 22:59:49, 8:22:30 08/09/00 07:20:19, 8:20:30 08/09/00 14:48:19, 7:28:00 08/10/00 02:09:49, 11:21:30 08/10/00 10:41:49, 8:32:00 08/10/00 19:09:49, 8:28:00 08/11/00 04:49:49, 9:40:00 08/11/00 14:39:19, 9:49:30 08/12/00 00:00:49, 9:21:30 08/12/00 08:11:49, 8:11:00 08/12/00 15:15:19, 7:03:30 08/13/00 00:11:19, 8:56:00 08/13/00 08:33:19, 8:22:00 08/13/00 17:28:00, 8:54:41 08/14/00 03:19:00, 9:51:00 08/14/00 12:03:49, 8:44:49 08/14/00 19:38:19, 7:34:30 08/15/00 04:29:49, 8:51:30 08/15/00 13:59:49, 9:30:00 08/16/00 00:05:49, 10:06:00 08/16/00 09:36:49, 9:31:00 08/16/00 17:46:49, 8:10:00 08/17/00 02:21:00, 8:34:11 08/17/00 10:29:00, 8:08:00 08/17/00 18:53:00, 8:24:00 08/18/00 02:48:00, 7:55:00 08/18/00 09:52:19, 7:04:19 08/18/00 17:54:38, 8:02:19 08/19/00 01:45:08, 7:50:30 08/19/00 10:09:08, 8:24:00 08/19/00 18:40:08, 8:31:00 08/20/00 03:30:38, 8:50:30 08/20/00 11:54:38, 8:24:00 08/20/00 20:23:08, 8:28:30 08/21/00 04:27:08, 8:04:00 08/21/00 12:23:38, 7:56:30 08/21/00 20:10:00, 7:46:22 08/22/00 04:45:00, 8:35:00 08/22/00 12:17:08, 7:32:08 08/22/00 21:52:38, 9:35:30 08/23/00 06:20:08, 8:27:30 08/23/00 14:09:38, 7:49:30 08/23/00 22:13:08, 8:03:30 08/24/00 06:46:08, 8:33:00 08/24/00 16:53:08, 10:07:00 08/24/00 23:49:08, 6:56:00 08/25/00 09:33:08, 9:44:00 08/25/00 19:20:38, 9:47:30 08/26/00 05:19:08, 9:58:30 08/26/00 14:25:38, 9:06:30 08/27/00 00:08:38, 9:43:00 08/27/00 09:10:38, 9:02:00 08/27/00 17:19:38, 8:09:00 08/28/00 07:25:08, 14:05:30 08/28/00 20:51:08, 13:26:00 08/29/00 10:42:08, 13:51:00 08/30/00 02:30:38, 15:48:30 08/30/00 15:19:08, 12:48:30 08/31/00 05:50:38, 14:31:30 08/31/00 17:36:08, 11:45:30 09/01/00 05:01:38, 11:25:30 09/01/00 18:06:38, 13:05:00 09/02/00 06:13:08, 12:06:30 09/02/00 18:31:08, 12:18:00 09/03/00 06:56:38, 12:25:30 09/03/00 19:36:08, 12:39:30 09/04/00 08:37:08, 13:01:00 09/04/00 23:25:38, 14:48:30 09/05/00 12:06:08, 12:40:30 09/06/00 00:14:38, 12:08:30 09/06/00 14:25:08, 14:10:30 09/07/00 02:25:38, 12:00:30 09/07/00 14:33:38, 12:08:00 09/08/00 03:01:08, 12:27:30 09/08/00 16:11:08, 13:10:00 09/09/00 04:28:08, 12:17:00 09/09/00 17:39:08, 13:11:00 09/10/00 07:29:08, 13:50:00 09/10/00 20:59:08, 13:30:00 09/11/00 09:46:38, 12:47:30 09/11/00 22:49:38, 13:03:00 09/12/00 13:22:38, 14:33:00 09/13/00 03:13:38, 13:51:00 09/13/00 16:33:08, 13:19:30 09/14/00 07:38:38, 15:05:30 09/14/00 19:41:08, 12:02:30 09/15/00 09:04:38, 13:23:30 09/15/00 22:27:38, 13:23:00 09/16/00 11:39:08, 13:11:30 09/16/00 23:08:08, 11:29:00 09/17/00 12:10:08, 13:02:00 09/18/00 01:20:08, 13:10:00 09/18/00 14:01:08, 12:41:00 09/19/00 01:34:08, 11:33:00 09/19/00 12:56:08, 11:22:00 09/20/00 00:27:38, 11:31:30 09/20/00 11:55:08, 11:27:30 09/20/00 23:41:08, 11:46:00 09/21/00 12:22:08, 12:41:00 09/21/00 21:44:08, 9:22:00 09/22/00 08:30:38, 10:46:30 09/22/00 18:49:38, 10:19:00 09/23/00 05:50:38, 11:01:00 09/23/00 17:29:08, 11:38:30 09/24/00 05:29:08, 12:00:00 09/24/00 20:07:38, 14:38:30 09/25/00 08:56:08, 12:48:30 09/25/00 20:20:38, 11:24:30 09/26/00 09:05:08, 12:44:30 09/26/00 22:11:08, 13:06:00 09/27/00 11:31:08, 13:20:00 09/27/00 21:30:38, 9:59:30 09/28/00 11:04:38, 13:34:00 09/28/00 22:36:38, 11:32:00 09/29/00 10:44:18, 12:07:40 09/29/00 23:57:48, 13:13:30 09/30/00 13:31:48, 13:34:00 10/01/00 01:37:48, 12:06:00 10/01/00 11:13:48, 9:36:00 10/01/00 23:08:48, 11:55:00 10/02/00 10:53:48, 11:45:00 10/02/00 21:39:18, 10:45:30 10/03/00 11:07:18, 13:28:00 10/03/00 22:54:48, 11:47:30 10/04/00 09:45:18, 10:50:30 10/04/00 20:34:18, 10:49:00 10/05/00 09:55:48, 13:21:30 10/05/00 22:00:18, 12:04:30 10/06/00 11:36:48, 13:36:30 10/06/00 23:47:18, 12:10:30 10/07/00 13:08:18, 13:21:00 10/08/00 02:46:18, 13:38:00 10/08/00 15:14:18, 12:28:00 10/09/00 03:15:18, 12:01:00 10/09/00 16:12:18, 12:57:00 10/10/00 05:40:48, 13:28:30 10/10/00 17:25:48, 11:45:00 10/11/00 03:09:48, 9:44:00 10/11/00 14:22:18, 11:12:30 10/12/00 02:39:18, 12:17:00 10/12/00 14:40:18, 12:01:00 10/13/00 02:21:18, 11:41:00 10/13/00 12:37:18, 10:16:00 10/14/00 00:30:18, 11:53:00 10/14/00 14:34:18, 14:04:00 10/15/00 03:18:18, 12:44:00 10/15/00 17:32:18, 14:14:00 10/16/00 05:43:18, 12:11:00 10/16/00 17:29:18, 11:46:00 10/17/00 06:23:18, 12:54:00 10/17/00 19:59:18, 13:36:00 10/18/00 06:32:18, 10:33:00 10/18/00 17:04:18, 10:32:00 10/19/00 04:50:18, 11:46:00 10/19/00 18:57:18, 14:07:00 10/20/00 08:35:18, 13:38:00 10/20/00 19:49:18, 11:14:00 10/21/00 08:02:18, 12:13:00 10/21/00 22:32:18, 14:30:00 10/22/00 09:31:18, 10:59:00 10/22/00 21:35:18, 12:04:00 10/23/00 11:16:18, 13:41:00 10/23/00 22:36:18, 11:20:00 10/24/00 11:42:18, 13:06:00 10/24/00 23:48:18, 12:06:00 10/25/00 10:20:18, 10:32:00 10/25/00 22:12:18, 11:52:00 10/26/00 11:30:18, 13:18:00 10/27/00 03:26:18, 15:56:00 10/27/00 16:45:18, 13:19:00 10/28/00 05:04:18, 12:19:00 10/28/00 17:35:18, 12:31:00 10/29/00 06:17:18, 12:42:00 10/29/00 17:34:18, 11:17:00 10/30/00 06:07:18, 12:33:00 10/30/00 17:11:18, 11:04:00 10/31/00 04:59:18, 11:48:00 10/31/00 16:45:18, 11:46:00 11/01/00 04:00:18, 11:15:00 11/01/00 15:22:18, 11:22:00 11/02/00 03:14:18, 11:52:00 11/02/00 19:10:18, 15:56:00 11/03/00 08:15:18, 13:05:00 11/03/00 20:58:18, 12:43:00 11/04/00 09:32:18, 12:34:00 11/04/00 21:45:18, 12:13:00 11/05/00 08:16:18, 10:31:00 11/05/00 19:41:18, 11:25:00 11/06/00 06:43:18, 11:02:00 11/06/00 17:52:18, 11:09:00 11/07/00 04:51:18, 10:59:00 11/07/00 16:18:18, 11:27:00 11/08/00 03:56:18, 11:38:00 11/08/00 15:03:18, 11:07:00 11/09/00 01:57:18, 10:54:00 11/09/00 14:22:18, 12:25:00 11/10/00 02:13:18, 11:51:00 11/10/00 12:56:18, 10:43:00 11/10/00 23:55:18, 10:59:00 11/11/00 12:13:18, 12:18:00 11/11/00 22:52:18, 10:39:00 11/12/00 12:14:18, 13:22:00 11/12/00 22:21:18, 10:07:00 11/13/00 10:53:18, 12:32:00 11/13/00 23:31:18, 12:38:00 11/14/00 11:58:18, 12:27:00 11/14/00 22:33:18, 10:35:00 11/15/00 11:19:18, 12:46:00 11/15/00 21:26:18, 10:07:00 11/16/00 11:03:18, 13:37:00 11/16/00 22:35:18, 11:32:00 11/17/00 12:16:18, 13:41:00 11/17/00 22:21:18, 10:05:00 11/18/00 11:11:18, 12:50:00 11/19/00 00:24:18, 13:13:00 11/19/00 12:14:18, 11:50:00 11/20/00 00:37:18, 12:23:00 11/20/00 12:03:18, 11:26:00 11/20/00 23:39:18, 11:36:00 11/21/00 12:46:18, 13:07:00 11/22/00 01:33:18, 12:47:00 11/22/00 12:44:18, 11:11:00 11/22/00 23:59:18, 11:15:00 11/23/00 12:23:18, 12:24:00 11/24/00 00:44:18, 12:21:00 11/24/00 10:59:18, 10:15:00 11/24/00 23:07:18, 12:08:00 11/25/00 10:17:18, 11:10:00 11/25/00 20:40:18, 10:23:00 11/26/00 05:51:18, 9:11:00 11/26/00 18:45:18, 12:54:00 11/27/00 05:23:18, 10:38:00 11/27/00 16:24:18, 11:01:00 11/28/00 03:21:18, 10:57:00 11/28/00 17:31:18, 14:10:00 11/29/00 05:49:18, 12:18:00 11/29/00 16:30:18, 10:41:00 11/30/00 06:42:18, 14:12:00 11/30/00 15:20:18, 8:38:00 11/30/00 23:59:18, 8:39:00 12/01/00 13:08:18, 13:09:00 12/01/00 22:35:18, 9:27:00 12/02/00 10:41:18, 12:06:00 12/02/00 21:32:18, 10:51:00 12/03/00 06:10:18, 8:38:00 12/03/00 19:08:18, 12:58:00 12/04/00 09:16:18, 14:08:00 12/04/00 19:45:18, 10:29:00 12/05/00 07:07:18, 11:22:00 12/05/00 20:17:18, 13:10:00 12/06/00 07:38:18, 11:21:00 12/06/00 17:32:18, 9:54:00 12/07/00 05:10:18, 11:38:00 12/07/00 14:03:18, 8:53:00 12/08/00 02:48:18, 12:45:00 12/08/00 14:18:18, 11:30:00 12/09/00 02:23:18, 12:05:00 12/09/00 14:19:18, 11:56:00 12/10/00 00:28:18, 10:09:00 12/10/00 09:32:18, 9:04:00 12/10/00 19:11:18, 9:39:00 12/11/00 06:01:18, 10:50:00 12/11/00 17:26:18, 11:25:00 12/12/00 04:40:18, 11:14:00 12/12/00 15:00:18, 10:20:00 12/13/00 01:37:18, 10:37:00 12/13/00 14:13:18, 12:36:00 12/14/00 01:43:18, 11:30:00 12/14/00 14:55:18, 13:12:00 12/15/00 02:15:18, 11:20:00 12/15/00 11:39:18, 9:24:00 12/16/00 00:18:18, 12:39:00 12/16/00 13:15:18, 12:57:00 12/16/00 23:30:18, 10:15:00 12/17/00 10:19:18, 10:49:00 12/17/00 20:14:18, 9:55:00 12/18/00 10:38:18, 14:24:00 12/18/00 23:24:18, 12:46:00 12/19/00 10:32:18, 11:08:00 12/19/00 22:36:18, 12:04:00 12/20/00 09:15:18, 10:39:00 12/20/00 21:26:18, 12:11:00 12/21/00 08:23:18, 10:57:00 12/21/00 19:52:18, 11:29:00 12/22/00 07:57:18, 12:05:00 12/22/00 20:11:18, 12:14:00 12/23/00 07:32:18, 11:21:00 12/23/00 18:20:18, 10:48:00 12/24/00 04:54:18, 10:34:00 12/24/00 14:56:18, 10:02:00 12/25/00 04:17:18, 13:21:00 12/25/00 16:49:18, 12:32:00 12/26/00 05:19:18, 12:30:00 12/26/00 16:39:18, 11:20:00 12/27/00 04:11:18, 11:32:00 12/27/00 15:48:18, 11:37:00 12/28/00 04:05:18, 12:17:00 12/28/00 17:19:18, 13:14:00 12/29/00 02:49:18, 9:30:00 12/29/00 15:01:18, 12:12:00 12/30/00 01:14:18, 10:13:00 12/30/00 11:26:18, 10:12:00 12/30/00 22:36:18, 11:10:00 12/31/00 08:51:18, 10:15:00 Total of 522 eruptions