Most often in August, 26 days.
Highest follower count seen that year: 11,200.
January
Jan 5 12:00–14:00 Jan 8 11:00–15:00, 19:00–20:00 Jan 9 12:00–14:00 Jan 10 13:00–15:00 Jan 11 06:00–13:00 Jan 12 11:00–14:00 Jan 13 11:00–14:00, 18:00–20:00 Jan 14 06:00–08:00, 12:00–14:00, 17:00–19:00 Jan 15 05:00–09:00 Jan 16 11:00–14:00 Jan 17 09:00–10:00, 12:00–14:00 Jan 22 11:00–14:00, 17:00–20:00, 23:00–24:00 Jan 23 00:00–02:00, 11:00–12:00 Jan 24 23:00–24:00 Jan 25 11:00–13:00 Jan 26 10:00–12:00 Jan 27 16:00–19:00 Jan 28 02:00–03:00, 10:00–11:00 Jan 31 06:00–09:00, 12:00–14:00, 17:00–20:00
February
Feb 4 17:00–19:00 Feb 5 03:00–07:00 Feb 6 12:00–14:00 Feb 7 13:00–15:00, 17:00–19:00 Feb 8 06:00–09:00 Feb 9 08:00–09:00 Feb 10 13:00–14:00 Feb 11 04:00–08:00, 12:00–14:00, 18:00–19:00 Feb 12 12:00–13:00 Feb 13 13:00–14:00 Feb 14 13:00–14:00 Feb 18 11:00–14:00, 17:00–19:00 Feb 19 11:00–13:00 Feb 20 12:00–13:00, 17:00–19:00 Feb 21 12:00–14:00, 17:00–19:00 Feb 22 02:00–04:00 Feb 23 11:00–13:00 Feb 25 18:00–21:00 Feb 26 08:00–10:00 Feb 27 11:00–14:00 Feb 28 13:00–14:00
March
Mar 2 11:00–14:00 Mar 4 12:00–14:00 Mar 6 11:00–14:00 Mar 7 06:00–07:00 Mar 11 03:00–06:00, 13:00–14:00 Mar 12 17:00–18:00 Mar 13 08:00–10:00, 12:00–13:00 Mar 14 17:00–18:00, 20:00–21:00 Mar 15 04:00–07:00, 12:00–14:00 Mar 16 08:00–09:00, 11:00–12:00 Mar 17 09:00–13:00, 16:00–19:00 Mar 18 05:00–07:00, 12:00–14:00, 17:00–20:00 Mar 19 03:00–07:00, 12:00–14:00 Mar 20 08:00–09:00, 12:00–13:00, 16:00–19:00 Mar 21 11:00–12:00, 15:00–18:00 Mar 22 02:00–05:00, 08:00–11:00 Mar 24 11:00–13:00, 17:00–19:00 Mar 25 03:00–04:00, 12:00–14:00 Mar 26 14:00–15:00, 17:00–19:00 Mar 27 05:00–08:00, 11:00–12:00 Mar 28 12:00–13:00, 16:00–19:00 Mar 29 05:00–07:00
April
Apr 1 13:00–15:00, 17:00–19:00 Apr 2 04:00–07:00 Apr 3 12:00–14:00 Apr 4 11:00–13:00, 17:00–19:00 Apr 5 05:00–06:00, 11:00–13:00 Apr 7 12:00–13:00, 17:00–19:00 Apr 8 07:00–09:00, 12:00–14:00, 17:00–19:00 Apr 9 05:00–07:00, 13:00–15:00, 17:00–18:00 Apr 10 02:00–07:00 Apr 11 13:00–14:00, 16:00–19:00 Apr 12 07:00–09:00, 12:00–13:00 Apr 14 12:00–14:00, 17:00–18:00 Apr 15 07:00–09:00 Apr 16 11:00–13:00, 17:00–18:00 Apr 17 08:00–09:00, 16:00–18:00 Apr 21 11:00–14:00 Apr 23 12:00–14:00 Apr 25 11:00–12:00, 16:00–18:00 Apr 26 05:00–07:00 Apr 28 12:00–14:00 Apr 29 13:00–14:00, 16:00–19:00 Apr 30 06:00–07:00
May
May 2 13:00–14:00 May 5 06:00–08:00, 12:00–14:00, 16:00–19:00 May 6 13:00–14:00, 16:00–19:00 May 7 04:00–07:00 May 8 18:00–20:00 May 9 07:00–10:00 May 10 08:00–09:00, 13:00–14:00 May 11 11:00–12:00 May 12 12:00–14:00, 16:00–18:00 May 13 05:00–09:00, 13:00–14:00, 17:00–19:00 May 14 03:00–05:00 May 15 12:00–14:00 May 16 13:00–14:00 May 17 11:00–13:00 May 18 09:00–10:00 May 19 16:00–18:00 May 22 13:00–14:00 May 23 17:00–18:00 May 24 11:00–14:00 May 27 17:00–19:00 May 28 03:00–04:00, 18:00–19:00 May 29 03:00–06:00 May 30 12:00–13:00
June
Jun 1 08:00–09:00 Jun 9 17:00–20:00 Jun 10 12:00–13:00 Jun 11 13:00–14:00 Jun 12 11:00–14:00 Jun 13 11:00–12:00 Jun 14 13:00–14:00 Jun 15 13:00–14:00 Jun 17 17:00–20:00 Jun 20 10:00–12:00 Jun 21 10:00–13:00 Jun 22 11:00–13:00 Jun 24 12:00–14:00, 17:00–20:00 Jun 25 03:00–05:00, 13:00–14:00 Jun 26 12:00–13:00 Jun 27 11:00–12:00, 17:00–18:00 Jun 30 13:00–14:00
July
Jul 1 12:00–13:00 Jul 3 12:00–14:00, 17:00–19:00 Jul 5 12:00–13:00 Jul 8 12:00–13:00, 18:00–19:00 Jul 9 04:00–06:00, 13:00–14:00 Jul 10 11:00–13:00, 17:00–18:00 Jul 11 10:00–11:00 Jul 12 12:00–13:00 Jul 15 12:00–14:00 Jul 16 11:00–12:00 Jul 17 12:00–14:00, 17:00–19:00 Jul 18 07:00–10:00, 12:00–13:00 Jul 21 11:00–14:00, 17:00–19:00 Jul 24 08:00–10:00 Jul 25 12:00–13:00 Jul 26 12:00–14:00 Jul 27 08:00–10:00 Jul 28 08:00–12:00 Jul 29 12:00–13:00, 16:00–19:00 Jul 30 08:00–10:00, 13:00–14:00
August
Aug 2 12:00–14:00 Aug 4 17:00–18:00 Aug 5 08:00–10:00, 13:00–15:00, 18:00–20:00 Aug 6 06:00–07:00, 09:00–14:00 Aug 7 12:00–14:00, 16:00–19:00 Aug 8 13:00–15:00 Aug 9 09:00–13:00, 20:00–21:00 Aug 10 12:00–14:00 Aug 11 12:00–14:00 Aug 12 13:00–14:00, 17:00–19:00 Aug 13 03:00–06:00, 12:00–13:00 Aug 14 16:00–19:00 Aug 15 05:00–07:00, 12:00–14:00 Aug 18 13:00–14:00 Aug 19 17:00–20:00 Aug 20 03:00–07:00, 17:00–19:00 Aug 21 05:00–07:00 Aug 22 13:00–14:00 Aug 23 10:00–11:00 Aug 25 17:00–19:00 Aug 26 16:00–18:00 Aug 27 04:00–09:00 Aug 28 12:00–14:00 Aug 29 17:00–19:00 Aug 30 05:00–07:00, 10:00–11:00 Aug 31 09:00–10:00
September
Sep 3 10:00–14:00 Sep 4 12:00–14:00 Sep 5 10:00–13:00 Sep 6 10:00–13:00 Sep 9 11:00–13:00, 18:00–19:00 Sep 11 12:00–14:00 Sep 12 12:00–13:00 Sep 13 13:00–14:00 Sep 15 17:00–19:00 Sep 16 05:00–06:00, 12:00–13:00 Sep 17 12:00–13:00 Sep 19 12:00–13:00, 17:00–18:00 Sep 20 04:00–05:00 Sep 22 12:00–14:00 Sep 23 18:00–19:00 Sep 24 12:00–14:00, 17:00–18:00 Sep 27 11:00–13:00, 17:00–18:00 Sep 28 04:00–07:00 Sep 29 13:00–14:00, 16:00–19:00 Sep 30 07:00–08:00, 12:00–13:00
October
Oct 1 08:00–10:00 Oct 2 11:00–12:00 Oct 4 11:00–13:00 Oct 7 10:00–14:00, 16:00–17:00 Oct 8 13:00–14:00 Oct 9 11:00–12:00, 19:00–20:00 Oct 10 08:00–09:00, 12:00–14:00 Oct 15 12:00–14:00, 18:00–19:00 Oct 17 07:00–08:00, 17:00–18:00 Oct 18 13:00–14:00 Oct 19 12:00–13:00 Oct 20 12:00–13:00, 18:00–19:00 Oct 21 05:00–06:00, 09:00–14:00, 17:00–18:00 Oct 22 03:00–05:00 Oct 23 12:00–13:00 Oct 24 12:00–13:00 Oct 27 11:00–12:00, 17:00–18:00 Oct 30 12:00–13:00 Oct 31 17:00–19:00
November
Nov 1 11:00–13:00 Nov 8 08:00–11:00 Nov 9 11:00–13:00 Nov 11 18:00–19:00 Nov 12 09:00–10:00, 12:00–14:00 Nov 14 09:00–10:00 Nov 15 11:00–12:00 Nov 18 11:00–12:00, 17:00–19:00 Nov 19 07:00–09:00 Nov 21 16:00–18:00 Nov 22 08:00–13:00 Nov 23 11:00–12:00 Nov 25 11:00–12:00, 16:00–20:00 Nov 26 06:00–08:00 Nov 27 11:00–13:00 Nov 28 17:00–19:00 Nov 29 02:00–03:00, 12:00–14:00 Nov 30 12:00–13:00
December
Dec 2 10:00–18:00, 20:00–21:00 Dec 3 03:00–05:00, 10:00–11:00, 13:00–15:00, 17:00–20:00 Dec 4 03:00–06:00, 13:00–14:00 Dec 5 13:00–14:00, 17:00–19:00 Dec 6 10:00–13:00 Dec 8 12:00–13:00 Dec 9 06:00–09:00 Dec 11 11:00–12:00 Dec 12 16:00–17:00 Dec 13 04:00–07:00, 10:00–14:00 Dec 15 11:00–14:00, 16:00–19:00 Dec 16 04:00–06:00, 12:00–14:00, 18:00–19:00 Dec 17 03:00–05:00, 09:00–18:00 Dec 18 09:00–13:00 Dec 20 11:00–12:00 Dec 22 17:00–18:00 Dec 23 07:00–08:00