Most often in May, 31 days.
Highest follower count seen that year: 6,110.
January
Jan 2 17:00–21:00 Jan 3 17:00–20:00 Jan 4 15:00–22:00 Jan 5 13:00–24:00 Jan 6 15:00–21:00 Jan 7 16:00–22:00 Jan 8 15:00–23:00 Jan 9 15:00–23:00 Jan 10 15:00–24:00 Jan 11 00:00–01:00, 13:00–24:00 Jan 12 00:00–01:00, 15:00–22:00 Jan 13 17:00–23:00 Jan 14 16:00–23:00 Jan 15 16:00–22:00 Jan 16 16:00–23:00 Jan 17 15:00–24:00 Jan 18 00:00–01:00, 15:00–24:00 Jan 19 00:00–01:00, 13:00–23:00 Jan 20 16:00–22:00 Jan 21 16:00–23:00 Jan 22 15:00–23:00 Jan 23 14:00–22:00 Jan 24 16:00–23:00 Jan 25 13:00–24:00 Jan 26 11:00–22:00 Jan 27 16:00–23:00 Jan 28 15:00–22:00 Jan 29 16:00–22:00 Jan 30 15:00–22:00 Jan 31 17:00–24:00
February
Feb 1 08:00–21:00 Feb 2 13:00–19:00 Feb 3 14:00–20:00 Feb 4 16:00–19:00 Feb 5 16:00–20:00, 22:00–24:00 Feb 6 15:00–23:00 Feb 7 14:00–24:00 Feb 8 00:00–03:00, 15:00–24:00 Feb 9 00:00–02:00, 13:00–20:00 Feb 10 15:00–21:00 Feb 11 15:00–22:00 Feb 12 15:00–22:00 Feb 13 16:00–22:00 Feb 14 16:00–24:00 Feb 15 00:00–02:00, 15:00–19:00, 22:00–24:00 Feb 16 00:00–02:00, 16:00–23:00 Feb 17 14:00–22:00 Feb 18 14:00–22:00 Feb 19 15:00–23:00 Feb 20 15:00–22:00 Feb 21 16:00–24:00 Feb 22 13:00–24:00 Feb 23 14:00–22:00 Feb 24 15:00–23:00 Feb 25 15:00–22:00 Feb 26 16:00–20:00, 22:00–23:00 Feb 27 14:00–23:00 Feb 28 14:00–24:00
March
Mar 1 12:00–22:00 Mar 2 12:00–20:00 Mar 3 14:00–24:00 Mar 4 00:00–01:00, 15:00–20:00 Mar 5 16:00–21:00 Mar 6 16:00–22:00 Mar 7 16:00–24:00 Mar 8 00:00–01:00, 14:00–24:00 Mar 9 12:00–22:00 Mar 10 14:00–22:00 Mar 11 16:00–21:00 Mar 12 16:00–22:00 Mar 13 16:00–21:00 Mar 14 17:00–22:00 Mar 15 13:00–22:00 Mar 16 14:00–21:00 Mar 17 14:00–21:00 Mar 18 16:00–23:00 Mar 19 16:00–21:00 Mar 20 16:00–22:00 Mar 21 16:00–23:00 Mar 22 12:00–18:00 Mar 23 12:00–23:00 Mar 24 17:00–21:00 Mar 25 17:00–22:00 Mar 26 16:00–22:00 Mar 27 16:00–22:00 Mar 28 16:00–20:00 Mar 29 13:00–22:00 Mar 30 12:00–20:00 Mar 31 13:00–22:00
April
Apr 1 15:00–21:00 Apr 2 15:00–19:00 Apr 3 15:00–21:00 Apr 4 15:00–21:00 Apr 5 11:00–21:00 Apr 6 14:00–15:00 Apr 7 15:00–20:00 Apr 8 15:00–20:00 Apr 9 15:00–18:00 Apr 10 15:00–20:00 Apr 11 15:00–23:00 Apr 12 14:00–20:00, 22:00–24:00 Apr 13 00:00–01:00, 14:00–17:00, 19:00–21:00 Apr 14 16:00–20:00 Apr 15 15:00–20:00 Apr 16 16:00–21:00 Apr 17 16:00–22:00 Apr 18 14:00–20:00 Apr 20 14:00–17:00 Apr 22 15:00–22:00 Apr 23 15:00–20:00 Apr 24 15:00–22:00 Apr 25 15:00–24:00 Apr 26 12:00–24:00 Apr 27 00:00–01:00, 12:00–17:00 Apr 28 19:00–22:00 Apr 29 15:00–22:00 Apr 30 14:00–23:00
May
May 1 14:00–22:00 May 2 15:00–22:00 May 3 13:00–23:00 May 4 13:00–20:00 May 5 16:00–21:00 May 6 16:00–20:00 May 7 15:00–22:00 May 8 13:00–22:00 May 9 15:00–22:00 May 10 11:00–22:00 May 11 12:00–19:00 May 12 14:00–20:00 May 13 13:00–21:00 May 14 13:00–23:00 May 15 15:00–22:00 May 16 13:00–21:00 May 17 12:00–21:00 May 18 12:00–20:00 May 19 17:00–21:00 May 20 14:00–21:00 May 21 13:00–22:00 May 22 15:00–22:00 May 23 15:00–24:00 May 24 00:00–02:00, 13:00–23:00 May 25 12:00–21:00 May 26 13:00–22:00 May 27 13:00–21:00 May 28 15:00–22:00 May 29 15:00–22:00 May 30 15:00–23:00 May 31 12:00–22:00
June
Jun 1 13:00–19:00 Jun 2 14:00–21:00 Jun 3 13:00–22:00 Jun 4 14:00–21:00 Jun 5 15:00–21:00 Jun 6 13:00–23:00 Jun 7 13:00–21:00 Jun 8 12:00–18:00 Jun 10 15:00–21:00 Jun 11 14:00–21:00 Jun 12 13:00–22:00 Jun 13 13:00–20:00 Jun 14 12:00–24:00 Jun 15 00:00–01:00, 11:00–17:00, 19:00–20:00 Jun 16 15:00–20:00 Jun 17 14:00–21:00 Jun 18 15:00–21:00 Jun 19 14:00–21:00 Jun 20 15:00–21:00 Jun 21 13:00–23:00 Jun 22 12:00–21:00 Jun 23 14:00–21:00 Jun 24 14:00–22:00 Jun 25 14:00–21:00 Jun 26 16:00–22:00 Jun 27 12:00–23:00 Jun 28 15:00–20:00 Jun 30 14:00–22:00
July
Jul 1 14:00–20:00 Jul 2 14:00–21:00 Jul 3 15:00–20:00 Jul 4 13:00–20:00 Jul 5 12:00–23:00 Jul 6 12:00–20:00 Jul 7 16:00–21:00 Jul 8 13:00–22:00 Jul 9 13:00–21:00 Jul 10 14:00–22:00 Jul 11 13:00–23:00 Jul 12 12:00–24:00 Jul 13 00:00–01:00, 12:00–21:00 Jul 14 16:00–22:00 Jul 15 16:00–22:00 Jul 16 14:00–21:00 Jul 17 14:00–21:00 Jul 18 15:00–23:00 Jul 19 12:00–21:00 Jul 20 12:00–20:00 Jul 21 16:00–21:00 Jul 22 16:00–21:00 Jul 23 16:00–19:00, 21:00–22:00 Jul 24 15:00–22:00 Jul 25 13:00–24:00 Jul 26 15:00–22:00 Jul 27 16:00–19:00 Jul 28 14:00–22:00 Jul 29 15:00–20:00 Jul 30 14:00–20:00 Jul 31 15:00–22:00
August
Aug 1 14:00–20:00 Aug 2 12:00–21:00 Aug 3 13:00–19:00 Aug 4 14:00–20:00 Aug 5 16:00–21:00 Aug 6 14:00–20:00 Aug 7 15:00–21:00 Aug 8 16:00–20:00 Aug 9 12:00–20:00 Aug 10 13:00–20:00 Aug 11 13:00–22:00 Aug 12 16:00–21:00 Aug 13 15:00–21:00 Aug 14 15:00–24:00 Aug 15 12:00–22:00 Aug 16 14:00–20:00 Aug 17 12:00–21:00 Aug 18 13:00–21:00 Aug 19 15:00–21:00 Aug 20 15:00–22:00 Aug 21 13:00–20:00 Aug 22 13:00–21:00 Aug 23 12:00–22:00 Aug 24 12:00–22:00 Aug 25 16:00–21:00 Aug 26 16:00–21:00 Aug 27 14:00–20:00 Aug 28 15:00–20:00 Aug 29 17:00–22:00 Aug 30 12:00–23:00 Aug 31 13:00–20:00
September
Sep 1 15:00–21:00 Sep 2 15:00–20:00 Sep 3 15:00–21:00 Sep 4 15:00–22:00 Sep 5 16:00–23:00 Sep 6 13:00–22:00 Sep 7 13:00–23:00 Sep 9 13:00–22:00 Sep 10 13:00–22:00 Sep 11 13:00–21:00 Sep 12 13:00–21:00 Sep 13 13:00–24:00 Sep 14 00:00–01:00, 12:00–22:00 Sep 15 15:00–21:00 Sep 16 13:00–21:00 Sep 17 13:00–21:00 Sep 18 13:00–21:00 Sep 19 14:00–21:00 Sep 20 12:00–21:00 Sep 21 12:00–21:00 Sep 22 15:00–21:00 Sep 23 13:00–21:00 Sep 24 14:00–20:00 Sep 25 13:00–21:00 Sep 26 15:00–22:00 Sep 27 12:00–24:00 Sep 28 12:00–16:00, 19:00–20:00 Sep 29 14:00–21:00 Sep 30 15:00–19:00
October
Oct 1 14:00–22:00 Oct 2 13:00–20:00 Oct 3 14:00–23:00 Oct 4 12:00–21:00 Oct 5 14:00–21:00 Oct 6 14:00–18:00 Oct 7 14:00–20:00 Oct 8 15:00–21:00 Oct 9 19:00–22:00 Oct 10 16:00–24:00 Oct 11 00:00–02:00, 12:00–20:00 Oct 12 12:00–22:00 Oct 13 17:00–19:00 Oct 14 15:00–18:00 Oct 15 16:00–18:00
December
Dec 1 14:00–22:00 Dec 2 16:00–21:00 Dec 4 14:00–21:00 Dec 5 15:00–23:00 Dec 6 13:00–22:00 Dec 7 14:00–22:00 Dec 9 14:00–22:00 Dec 10 15:00–21:00 Dec 12 16:00–23:00 Dec 13 12:00–20:00 Dec 15 16:00–23:00 Dec 16 14:00–23:00 Dec 17 15:00–22:00 Dec 18 15:00–20:00 Dec 20 13:00–19:00 Dec 21 14:00–22:00 Dec 23 17:00–20:00 Dec 24 17:00–22:00 Dec 26 17:00–22:00 Dec 31 16:00–21:00