18 instances from 3 years 2021 - 1 instance Jan Feb Mar 20 Apr May Jun Jul Aug Sep Oct Nov Dec 2018 - 7 instances Jan Feb Mar Apr May Jun 21 6 Jun 21, 2018 6 instances 04:42:13 04:42:16 04:42:18 04:43:58 04:44:01 19:56:25 23 Jul Aug Sep Oct Nov Dec 2017 - 10 instances Jan Feb Mar Apr May Jun 21 6 Jun 21, 2017 6 instances 14:34:18 14:34:31 15:08:41 15:08:51 15:20:31 15:20:42 Jul Aug Sep Oct 2 2 Oct 2, 2017 2 instances 15:11:25 15:11:35 Nov Dec 25 2 Dec 25, 2017 2 instances 19:12:29 19:12:33