Most often in July, 27 days.
Highest follower count seen that year: 29,316.
January
Jan 2 15:00–17:00 Jan 3 14:00–17:00 Jan 5 08:00–10:00, 16:00–17:00 Jan 6 15:00–17:00 Jan 8 16:00–17:00 Jan 9 15:00–17:00 Jan 10 18:00–19:00 Jan 11 17:00–19:00 Jan 14 18:00–19:00 Jan 16 16:00–17:00 Jan 17 15:00–17:00 Jan 18 08:00–09:00, 13:00–14:00, 16:00–17:00 Jan 19 13:00–14:00, 16:00–17:00 Jan 20 16:00–17:00 Jan 21 16:00–17:00 Jan 22 15:00–18:00 Jan 23 15:00–16:00 Jan 24 15:00–17:00 Jan 25 16:00–17:00 Jan 29 16:00–17:00 Jan 30 15:00–17:00 Jan 31 16:00–17:00
February
Feb 1 08:00–10:00, 15:00–17:00 Feb 2 13:00–16:00 Feb 3 15:00–17:00 Feb 4 15:00–17:00 Feb 5 16:00–17:00 Feb 6 10:00–11:00, 15:00–16:00 Feb 7 16:00–17:00 Feb 8 08:00–09:00, 16:00–18:00 Feb 9 09:00–10:00, 15:00–17:00 Feb 10 16:00–17:00 Feb 11 15:00–16:00 Feb 12 15:00–16:00 Feb 14 15:00–17:00 Feb 15 16:00–17:00 Feb 16 08:00–09:00, 16:00–17:00 Feb 17 15:00–17:00 Feb 18 16:00–17:00 Feb 19 15:00–16:00 Feb 20 16:00–17:00 Feb 21 15:00–17:00 Feb 22 08:00–09:00, 16:00–17:00 Feb 23 08:00–09:00 Feb 24 16:00–17:00 Feb 25 15:00–17:00 Feb 26 16:00–17:00 Feb 27 14:00–16:00 Feb 28 15:00–17:00
March
Mar 1 08:00–09:00 Mar 2 16:00–18:00 Mar 3 15:00–17:00 Mar 4 15:00–16:00 Mar 5 15:00–17:00 Mar 6 15:00–16:00 Mar 7 15:00–16:00 Mar 8 08:00–09:00, 15:00–17:00 Mar 9 08:00–09:00 Mar 10 16:00–17:00 Mar 11 14:00–16:00 Mar 12 14:00–17:00 Mar 13 15:00–16:00 Mar 14 15:00–16:00 Mar 15 09:00–10:00 Mar 16 08:00–09:00, 16:00–18:00 Mar 18 15:00–16:00 Mar 19 16:00–17:00 Mar 21 14:00–16:00 Mar 22 08:00–09:00, 15:00–17:00 Mar 23 16:00–18:00 Mar 25 16:00–17:00 Mar 26 15:00–17:00 Mar 27 15:00–16:00 Mar 29 08:00–09:00 Mar 30 08:00–09:00, 17:00–18:00
April
Apr 1 14:00–16:00 Apr 2 15:00–17:00 Apr 3 08:00–09:00, 14:00–16:00 Apr 5 08:00–09:00 Apr 7 14:00–16:00 Apr 8 07:00–08:00, 14:00–15:00 Apr 10 21:00–23:00 Apr 11 08:00–09:00, 15:00–16:00, 21:00–22:00 Apr 12 08:00–09:00, 16:00–17:00 Apr 13 08:00–09:00, 17:00–18:00 Apr 14 08:00–09:00 Apr 15 15:00–18:00 Apr 16 07:00–09:00, 17:00–18:00 Apr 17 07:00–08:00, 16:00–18:00 Apr 18 07:00–09:00, 15:00–16:00 Apr 19 08:00–09:00 Apr 20 15:00–16:00 Apr 21 14:00–15:00 Apr 22 14:00–16:00 Apr 23 14:00–16:00 Apr 24 14:00–16:00 Apr 25 14:00–15:00 Apr 26 08:00–09:00, 14:00–16:00 Apr 27 07:00–08:00, 15:00–18:00 Apr 28 07:00–08:00 Apr 29 12:00–13:00, 15:00–16:00 Apr 30 15:00–16:00
May
May 1 07:00–09:00, 16:00–18:00 May 2 07:00–09:00, 15:00–17:00 May 3 15:00–18:00 May 4 14:00–16:00 May 5 15:00–16:00 May 6 07:00–08:00, 14:00–16:00 May 7 14:00–16:00 May 8 13:00–15:00 May 9 07:00–09:00, 15:00–17:00 May 11 15:00–16:00 May 12 18:00–19:00 May 13 18:00–19:00 May 14 07:00–08:00, 18:00–19:00 May 16 14:00–16:00 May 17 16:00–18:00 May 18 07:00–09:00, 15:00–16:00 May 19 15:00–16:00 May 20 07:00–08:00, 18:00–19:00 May 22 08:00–09:00, 15:00–16:00 May 24 15:00–16:00 May 25 15:00–17:00 May 26 14:00–16:00 May 27 07:00–09:00, 15:00–16:00 May 28 07:00–08:00, 15:00–16:00 May 29 08:00–09:00, 18:00–19:00 May 30 07:00–08:00, 15:00–16:00 May 31 07:00–09:00, 16:00–17:00
June
Jun 1 08:00–09:00 Jun 6 08:00–09:00, 17:00–18:00 Jun 7 07:00–08:00, 15:00–18:00 Jun 8 07:00–08:00 Jun 9 07:00–08:00, 14:00–16:00 Jun 10 15:00–16:00 Jun 11 07:00–09:00, 17:00–18:00 Jun 12 16:00–18:00 Jun 13 07:00–08:00, 14:00–16:00 Jun 14 07:00–09:00, 17:00–18:00 Jun 15 08:00–09:00, 15:00–17:00 Jun 16 07:00–08:00, 15:00–16:00 Jun 17 09:00–11:00 Jun 18 13:00–15:00 Jun 19 17:00–18:00 Jun 20 07:00–08:00, 14:00–15:00 Jun 21 16:00–18:00 Jun 22 07:00–08:00 Jun 23 07:00–08:00, 15:00–16:00 Jun 25 07:00–08:00, 14:00–15:00, 17:00–18:00 Jun 26 07:00–08:00, 16:00–18:00 Jun 27 07:00–08:00, 14:00–16:00 Jun 28 17:00–18:00 Jun 29 07:00–08:00 Jun 30 07:00–08:00, 15:00–17:00
July
Jul 1 07:00–09:00, 14:00–17:00 Jul 2 07:00–08:00, 14:00–15:00 Jul 3 07:00–08:00, 18:00–19:00 Jul 4 07:00–08:00, 14:00–16:00, 18:00–19:00 Jul 5 07:00–08:00, 15:00–16:00 Jul 7 07:00–08:00, 16:00–18:00 Jul 8 07:00–08:00, 16:00–18:00 Jul 9 18:00–19:00 Jul 10 07:00–08:00, 14:00–16:00 Jul 11 07:00–08:00 Jul 12 07:00–08:00, 16:00–17:00 Jul 13 08:00–09:00 Jul 14 14:00–16:00 Jul 15 07:00–08:00 Jul 18 15:00–17:00 Jul 19 07:00–09:00, 15:00–19:00 Jul 20 07:00–08:00, 15:00–19:00 Jul 21 15:00–16:00 Jul 22 06:00–08:00, 14:00–15:00 Jul 23 07:00–08:00, 14:00–15:00 Jul 24 07:00–08:00, 15:00–17:00 Jul 25 07:00–08:00, 15:00–16:00 Jul 26 07:00–09:00, 17:00–18:00 Jul 28 08:00–09:00 Jul 29 07:00–08:00, 14:00–15:00, 17:00–19:00 Jul 30 07:00–08:00, 16:00–17:00 Jul 31 07:00–08:00, 15:00–17:00
August
Aug 1 07:00–08:00 Aug 9 08:00–09:00 Aug 11 07:00–08:00, 15:00–17:00 Aug 12 07:00–08:00, 17:00–18:00 Aug 13 07:00–09:00, 14:00–15:00 Aug 14 15:00–16:00 Aug 15 08:00–09:00 Aug 17 07:00–08:00 Aug 18 08:00–09:00 Aug 19 07:00–08:00 Aug 20 07:00–08:00, 14:00–15:00 Aug 21 07:00–09:00, 14:00–15:00 Aug 22 07:00–08:00 Aug 23 07:00–08:00, 14:00–16:00 Aug 24 07:00–09:00 Aug 25 14:00–15:00 Aug 26 07:00–09:00, 17:00–18:00 Aug 27 07:00–08:00, 14:00–16:00 Aug 28 07:00–08:00, 14:00–16:00 Aug 29 07:00–08:00, 14:00–16:00 Aug 30 08:00–09:00 Aug 31 07:00–08:00
September
Sep 1 07:00–09:00, 14:00–16:00 Sep 2 08:00–09:00 Sep 3 07:00–09:00, 14:00–16:00, 18:00–19:00 Sep 4 07:00–08:00 Sep 5 07:00–09:00, 14:00–16:00 Sep 6 07:00–09:00, 15:00–18:00 Sep 7 08:00–09:00 Sep 8 07:00–09:00, 15:00–18:00 Sep 9 07:00–09:00, 14:00–16:00, 18:00–19:00 Sep 10 07:00–08:00, 16:00–17:00 Sep 11 07:00–08:00, 14:00–16:00 Sep 12 07:00–09:00, 15:00–16:00 Sep 15 21:00–22:00 Sep 16 07:00–09:00, 14:00–16:00 Sep 17 07:00–09:00, 16:00–19:00 Sep 18 07:00–08:00 Sep 19 07:00–09:00, 15:00–18:00, 21:00–23:00 Sep 20 07:00–09:00, 17:00–18:00 Sep 21 07:00–09:00 Sep 22 07:00–08:00, 15:00–18:00 Sep 23 07:00–08:00, 14:00–16:00 Sep 24 07:00–08:00, 15:00–16:00 Sep 25 14:00–15:00 Sep 26 07:00–09:00, 16:00–18:00 Sep 29 14:00–16:00 Sep 30 07:00–08:00, 15:00–16:00
October
Oct 1 07:00–09:00, 15:00–16:00 Oct 2 07:00–08:00, 15:00–16:00 Oct 3 07:00–08:00, 17:00–18:00 Oct 4 07:00–08:00 Oct 5 08:00–09:00, 17:00–18:00 Oct 7 07:00–08:00, 14:00–15:00 Oct 8 15:00–16:00 Oct 9 07:00–08:00, 15:00–16:00 Oct 10 08:00–09:00, 15:00–16:00 Oct 11 08:00–09:00, 14:00–15:00 Oct 12 07:00–08:00, 16:00–17:00 Oct 13 07:00–08:00, 14:00–15:00 Oct 14 08:00–09:00, 16:00–17:00 Oct 15 08:00–09:00 Oct 16 14:00–15:00 Oct 17 08:00–09:00, 15:00–16:00 Oct 18 08:00–09:00, 15:00–16:00 Oct 20 07:00–08:00, 13:00–14:00 Oct 21 08:00–09:00, 15:00–16:00 Oct 22 08:00–09:00, 14:00–15:00 Oct 24 08:00–09:00 Oct 26 09:00–10:00 Oct 28 08:00–09:00, 16:00–17:00 Oct 29 09:00–10:00, 16:00–17:00 Oct 30 09:00–10:00 Oct 31 08:00–09:00, 16:00–17:00
November
Nov 1 08:00–10:00, 15:00–17:00 Nov 2 09:00–11:00 Nov 3 16:00–18:00 Nov 4 07:00–08:00, 15:00–17:00, 21:00–22:00 Nov 5 07:00–08:00, 15:00–16:00 Nov 6 08:00–09:00 Nov 7 08:00–09:00 Nov 8 09:00–10:00 Nov 10 09:00–10:00 Nov 11 09:00–10:00, 15:00–17:00 Nov 12 15:00–16:00 Nov 13 09:00–10:00, 16:00–17:00 Nov 14 09:00–10:00 Nov 15 16:00–17:00 Nov 16 09:00–10:00 Nov 17 09:00–10:00 Nov 18 15:00–16:00 Nov 19 15:00–16:00 Nov 20 15:00–16:00 Nov 21 09:00–10:00, 15:00–16:00 Nov 22 09:00–10:00, 15:00–16:00 Nov 23 09:00–10:00 Nov 24 09:00–10:00, 15:00–17:00 Nov 25 09:00–10:00, 15:00–16:00 Nov 26 18:00–19:00 Nov 27 18:00–20:00 Nov 30 18:00–19:00
December
Dec 2 16:00–18:00 Dec 3 10:00–11:00, 15:00–17:00 Dec 4 15:00–16:00 Dec 5 15:00–17:00 Dec 7 10:00–11:00, 15:00–16:00 Dec 8 15:00–16:00 Dec 9 09:00–10:00, 15:00–17:00 Dec 10 09:00–10:00 Dec 11 11:00–12:00, 17:00–18:00 Dec 12 16:00–17:00 Dec 13 12:00–13:00 Dec 14 16:00–17:00 Dec 15 16:00–17:00 Dec 16 16:00–17:00 Dec 18 15:00–16:00 Dec 19 15:00–16:00 Dec 20 15:00–17:00 Dec 21 15:00–16:00 Dec 22 09:00–10:00, 15:00–16:00 Dec 23 09:00–10:00, 15:00–16:00 Dec 26 15:00–17:00 Dec 27 16:00–17:00 Dec 28 22:00–23:00 Dec 29 09:00–10:00, 16:00–17:00 Dec 30 09:00–10:00 Dec 31 09:00–10:00, 16:00–17:00