Most often in July, 27 days.
Highest follower count seen that year: 26,321.
March
Mar 14 14:00–20:00 Mar 15 13:00–20:00 Mar 16 13:00–20:00 Mar 18 13:00–20:00 Mar 19 14:00–20:00 Mar 21 13:00–20:00 Mar 22 13:00–20:00 Mar 23 13:00–20:00 Mar 25 13:00–20:00 Mar 26 14:00–20:00 Mar 28 13:00–20:00 Mar 29 13:00–20:00 Mar 30 13:00–20:00
April
Apr 1 13:00–20:00 Apr 2 14:00–20:00 Apr 4 13:00–20:00 Apr 5 13:00–20:00 Apr 6 13:00–15:00 Apr 8 14:00–20:00 Apr 9 15:00–18:00 Apr 11 13:00–20:00 Apr 12 13:00–20:00 Apr 13 13:00–20:00 Apr 16 14:00–20:00 Apr 17 14:00–20:00 Apr 18 13:00–20:00 Apr 20 13:00–19:00 Apr 22 15:00–21:00 Apr 23 14:00–20:00 Apr 25 14:00–20:00 Apr 26 13:00–20:00 Apr 27 13:00–17:00 Apr 29 14:00–20:00
May
May 1 13:00–20:00 May 2 14:00–20:00 May 3 13:00–20:00 May 4 13:00–20:00 May 6 13:00–20:00 May 7 13:00–20:00 May 8 13:00–20:00 May 9 13:00–20:00 May 10 13:00–20:00 May 11 13:00–20:00 May 13 13:00–20:00 May 14 13:00–20:00 May 17 13:00–20:00 May 18 13:00–20:00 May 20 13:00–20:00 May 21 13:00–20:00 May 23 13:00–20:00 May 24 13:00–20:00 May 25 13:00–19:00 May 27 14:00–20:00 May 28 14:00–20:00 May 29 14:00–20:00 May 30 13:00–20:00 May 31 13:00–20:00
June
Jun 1 13:00–20:00 Jun 3 14:00–20:00 Jun 4 13:00–20:00 Jun 6 13:00–20:00 Jun 7 13:00–19:00 Jun 8 13:00–20:00 Jun 10 13:00–20:00 Jun 11 15:00–20:00 Jun 13 14:00–20:00 Jun 14 13:00–20:00 Jun 15 13:00–20:00 Jun 24 13:00–20:00 Jun 25 13:00–20:00 Jun 27 13:00–20:00 Jun 28 13:00–20:00 Jun 29 13:00–20:00
July
Jul 1 13:00–20:00 Jul 3 14:00–20:00 Jul 4 13:00–20:00 Jul 5 13:00–20:00 Jul 6 13:00–20:00 Jul 8 13:00–20:00 Jul 9 13:00–21:00 Jul 11 13:00–20:00 Jul 12 13:00–20:00 Jul 13 13:00–20:00 Jul 14 13:00–20:00 Jul 15 14:00–20:00 Jul 16 15:00–20:00 Jul 17 13:00–20:00 Jul 19 09:00–20:00 Jul 20 09:00–20:00 Jul 21 13:00–21:00 Jul 22 10:00–20:00 Jul 23 10:00–20:00 Jul 24 09:00–20:00 Jul 25 08:00–18:00 Jul 26 10:00–21:00 Jul 27 10:00–19:00 Jul 28 07:00–12:00 Jul 29 06:00–13:00 Jul 30 07:00–12:00 Jul 31 05:00–13:00
August
Aug 1 06:00–11:00 Aug 2 07:00–12:00 Aug 3 05:00–13:00 Aug 6 05:00–13:00 Aug 7 06:00–13:00 Aug 8 06:00–13:00 Aug 9 06:00–13:00 Aug 10 06:00–12:00 Aug 11 06:00–13:00 Aug 15 06:00–12:00 Aug 16 06:00–12:00 Aug 17 06:00–12:00 Aug 18 06:00–12:00 Aug 20 06:00–11:00 Aug 21 06:00–12:00 Aug 25 06:00–10:00 Aug 26 06:00–13:00 Aug 27 06:00–10:00 Aug 28 06:00–12:00 Aug 29 06:00–12:00 Aug 30 06:00–12:00
September
Sep 3 13:00–15:00 Sep 4 10:00–16:00 Sep 6 06:00–18:00 Sep 7 06:00–15:00 Sep 8 13:00–19:00 Sep 9 13:00–20:00 Sep 10 13:00–20:00 Sep 13 07:00–14:00 Sep 14 06:00–18:00 Sep 16 13:00–21:00 Sep 17 12:00–20:00 Sep 18 06:00–08:00, 11:00–19:00 Sep 19 13:00–17:00 Sep 20 06:00–13:00 Sep 21 07:00–15:00 Sep 23 14:00–20:00 Sep 24 13:00–21:00 Sep 25 06:00–20:00 Sep 27 06:00–21:00 Sep 28 06:00–19:00 Sep 29 13:00–15:00
October
Oct 1 13:00–20:00 Oct 2 06:00–15:00 Oct 3 11:00–19:00 Oct 4 07:00–19:00 Oct 5 06:00–08:00, 10:00–20:00 Oct 6 14:00–20:00 Oct 7 13:00–20:00 Oct 9 14:00–20:00 Oct 11 07:00–20:00 Oct 12 06:00–15:00 Oct 13 13:00–20:00 Oct 16 07:00–20:00 Oct 17 09:00–20:00 Oct 18 06:00–14:00 Oct 19 07:00–21:00 Oct 21 14:00–20:00 Oct 22 09:00–20:00 Oct 24 08:00–20:00 Oct 25 06:00–20:00 Oct 26 06:00–21:00 Oct 29 14:00–20:00 Oct 30 08:00–20:00 Oct 31 13:00–20:00
November
Nov 1 07:00–20:00 Nov 2 07:00–20:00 Nov 3 13:00–21:00 Nov 4 07:00–20:00 Nov 8 13:00–20:00 Nov 9 07:00–20:00 Nov 10 13:00–20:00 Nov 12 13:00–20:00 Nov 13 13:00–20:00 Nov 14 10:00–20:00 Nov 15 07:00–21:00 Nov 17 13:00–21:00 Nov 18 15:00–21:00 Nov 19 13:00–21:00 Nov 22 07:00–20:00 Nov 23 08:00–20:00 Nov 24 13:00–21:00 Nov 26 13:00–20:00 Nov 27 13:00–20:00 Nov 28 13:00–20:00 Nov 29 08:00–20:00 Nov 30 07:00–20:00
December
Dec 1 13:00–20:00 Dec 3 13:00–21:00 Dec 5 07:00–20:00 Dec 6 07:00–20:00 Dec 7 07:00–20:00 Dec 8 13:00–20:00 Dec 11 06:00–12:00 Dec 12 13:00–17:00 Dec 13 06:00–08:00, 13:00–20:00 Dec 14 07:00–20:00 Dec 17 13:00–20:00 Dec 18 13:00–21:00 Dec 19 13:00–20:00 Dec 20 07:00–20:00 Dec 21 07:00–21:00 Dec 24 13:00–21:00 Dec 25 13:00–20:00 Dec 26 13:00–21:00 Dec 27 07:00–15:00 Dec 28 07:00–20:00 Dec 29 13:00–14:00 Dec 31 07:00–10:00