Most often in October, 24 days.
Highest follower count seen that year: 837.
January
Jan 6 16:00–17:00 Jan 7 13:00–14:00 Jan 14 20:00–21:00 Jan 25 07:00–08:00 Jan 27 07:00–08:00, 13:00–15:00 Jan 28 07:00–08:00, 13:00–14:00, 16:00–17:00 Jan 30 07:00–08:00, 16:00–17:00
February
Feb 1 09:00–10:00, 12:00–13:00 Feb 2 21:00–22:00 Feb 8 09:00–11:00 Feb 9 06:00–08:00 Feb 11 06:00–08:00 Feb 13 06:00–07:00 Feb 14 15:00–18:00, 22:00–23:00 Feb 15 07:00–09:00 Feb 16 07:00–08:00, 15:00–16:00 Feb 17 07:00–08:00, 16:00–17:00 Feb 18 07:00–08:00, 14:00–16:00 Feb 19 16:00–17:00 Feb 20 07:00–08:00, 23:00–24:00 Feb 21 02:00–03:00, 07:00–08:00 Feb 28 09:00–13:00
March
Mar 1 10:00–11:00 Mar 2 06:00–07:00 Mar 6 06:00–07:00 Mar 9 07:00–08:00 Mar 12 13:00–16:00 Mar 13 07:00–08:00, 14:00–17:00 Mar 14 10:00–12:00, 16:00–17:00 Mar 15 09:00–10:00, 12:00–13:00 Mar 16 20:00–22:00 Mar 17 20:00–22:00 Mar 18 20:00–22:00 Mar 19 20:00–22:00 Mar 21 21:00–22:00 Mar 23 06:00–08:00 Mar 24 06:00–09:00, 17:00–19:00 Mar 25 17:00–18:00 Mar 26 18:00–21:00 Mar 27 06:00–09:00 Mar 28 20:00–22:00 Mar 29 07:00–09:00, 13:00–14:00 Mar 30 06:00–07:00, 14:00–17:00 Mar 31 06:00–07:00, 14:00–15:00
April
Apr 1 06:00–07:00, 13:00–14:00 Apr 3 06:00–08:00, 14:00–15:00 Apr 4 20:00–22:00 Apr 5 08:00–09:00, 13:00–14:00, 19:00–20:00 Apr 8 19:00–21:00 Apr 11 10:00–11:00, 15:00–16:00 Apr 12 11:00–13:00, 17:00–19:00 Apr 14 05:00–08:00 Apr 17 05:00–07:00 Apr 18 20:00–21:00 Apr 20 10:00–12:00, 14:00–15:00 Apr 21 14:00–15:00 Apr 22 06:00–07:00, 16:00–17:00 Apr 23 06:00–07:00, 13:00–16:00 Apr 24 06:00–07:00, 12:00–13:00 Apr 25 06:00–07:00, 20:00–21:00 Apr 26 13:00–14:00, 20:00–22:00 Apr 28 19:00–21:00 Apr 29 20:00–21:00 Apr 30 19:00–21:00
May
May 1 09:00–10:00 May 3 08:00–09:00, 12:00–14:00, 20:00–21:00 May 4 05:00–07:00 May 5 05:00–07:00 May 6 06:00–07:00, 21:00–22:00 May 7 07:00–08:00, 21:00–22:00 May 8 05:00–07:00 May 9 14:00–16:00, 20:00–21:00 May 10 12:00–17:00 May 11 06:00–07:00, 14:00–15:00 May 13 13:00–17:00 May 14 06:00–08:00, 14:00–15:00 May 15 12:00–17:00 May 16 06:00–07:00, 15:00–22:00 May 17 12:00–14:00, 16:00–17:00, 20:00–21:00 May 20 19:00–20:00 May 24 12:00–14:00, 19:00–21:00 May 26 21:00–23:00 May 27 06:00–08:00, 21:00–24:00 May 28 05:00–07:00, 21:00–23:00 May 29 08:00–09:00 May 31 12:00–14:00
June
Jun 1 06:00–11:00, 13:00–14:00, 20:00–22:00 Jun 2 12:00–15:00 Jun 3 06:00–07:00, 11:00–14:00 Jun 4 06:00–07:00, 12:00–17:00 Jun 5 12:00–14:00 Jun 6 06:00–07:00, 12:00–15:00, 20:00–21:00 Jun 7 12:00–16:00 Jun 25 20:00–22:00 Jun 26 11:00–17:00, 19:00–21:00 Jun 27 13:00–16:00, 20:00–21:00 Jun 28 13:00–17:00, 19:00–21:00 Jun 29 19:00–20:00
July
Jul 2 19:00–20:00 Jul 3 20:00–21:00 Jul 5 08:00–10:00, 12:00–13:00 Jul 7 05:00–07:00, 09:00–10:00, 21:00–23:00 Jul 10 05:00–07:00 Jul 11 07:00–08:00, 12:00–13:00, 17:00–18:00, 20:00–21:00 Jul 12 08:00–10:00, 13:00–14:00 Jul 13 11:00–14:00 Jul 15 13:00–14:00 Jul 16 06:00–07:00, 13:00–17:00 Jul 17 06:00–07:00, 13:00–15:00 Jul 18 09:00–10:00, 14:00–16:00 Jul 21 19:00–21:00 Jul 22 19:00–21:00 Jul 23 19:00–21:00 Jul 24 19:00–20:00 Jul 25 15:00–16:00, 20:00–21:00 Jul 26 12:00–16:00, 19:00–20:00 Jul 27 05:00–07:00 Jul 28 05:00–07:00 Jul 29 21:00–22:00 Jul 30 07:00–08:00 Jul 31 05:00–06:00, 08:00–09:00, 19:00–20:00
August
Aug 1 12:00–13:00, 15:00–16:00, 20:00–21:00 Aug 2 13:00–17:00 Aug 3 07:00–08:00 Aug 7 06:00–07:00, 13:00–17:00 Aug 8 08:00–13:00, 15:00–16:00 Aug 9 08:00–17:00 Aug 11 22:00–23:00 Aug 12 00:00–04:00, 06:00–07:00, 12:00–17:00, 19:00–20:00 Aug 13 16:00–17:00, 19:00–21:00 Aug 14 16:00–17:00 Aug 15 08:00–16:00, 20:00–21:00 Aug 16 11:00–14:00, 20:00–21:00 Aug 17 05:00–06:00 Aug 18 05:00–09:00 Aug 21 05:00–08:00 Aug 22 12:00–16:00 Aug 23 11:00–12:00, 16:00–17:00 Aug 24 06:00–07:00, 10:00–14:00, 16:00–17:00 Aug 26 06:00–07:00, 10:00–11:00, 13:00–15:00 Aug 27 06:00–07:00, 13:00–15:00 Aug 28 12:00–14:00 Aug 29 17:00–18:00, 20:00–22:00 Aug 30 08:00–10:00, 12:00–13:00
September
Sep 2 15:00–17:00, 19:00–20:00 Sep 5 10:00–12:00, 15:00–18:00, 22:00–23:00 Sep 6 08:00–12:00, 14:00–15:00, 17:00–21:00 Sep 7 06:00–08:00 Sep 8 05:00–07:00 Sep 10 07:00–08:00 Sep 11 05:00–07:00 Sep 12 12:00–18:00 Sep 13 11:00–13:00 Sep 14 13:00–14:00, 16:00–17:00 Sep 15 10:00–15:00 Sep 16 12:00–14:00 Sep 17 06:00–07:00, 13:00–15:00 Sep 18 12:00–13:00, 16:00–17:00 Sep 20 08:00–10:00, 12:00–13:00 Sep 22 10:00–13:00, 20:00–21:00 Sep 23 12:00–14:00, 20:00–21:00 Sep 24 13:00–15:00 Sep 26 10:00–12:00, 15:00–18:00, 20:00–22:00 Sep 27 08:00–09:00, 11:00–16:00 Sep 28 05:00–07:00 Sep 30 22:00–24:00
October
Oct 1 11:00–16:00 Oct 2 12:00–13:00, 15:00–16:00, 20:00–23:00 Oct 3 08:00–16:00, 20:00–21:00 Oct 4 08:00–09:00, 11:00–12:00 Oct 5 07:00–08:00, 13:00–15:00 Oct 6 12:00–15:00, 19:00–21:00 Oct 7 10:00–11:00, 13:00–15:00 Oct 8 14:00–16:00 Oct 10 12:00–16:00, 20:00–22:00 Oct 11 08:00–09:00, 11:00–13:00 Oct 12 00:00–02:00, 12:00–17:00 Oct 13 00:00–02:00, 16:00–17:00 Oct 14 08:00–10:00 Oct 17 08:00–09:00 Oct 18 08:00–14:00, 20:00–21:00 Oct 19 06:00–07:00 Oct 22 09:00–10:00 Oct 23 22:00–24:00 Oct 24 07:00–10:00 Oct 27 15:00–17:00 Oct 28 15:00–17:00 Oct 29 14:00–16:00 Oct 30 11:00–12:00, 14:00–18:00 Oct 31 07:00–09:00, 16:00–17:00, 21:00–22:00