Most often in June, 27 days.
Highest follower count seen that year: 520.
January
Jan 1 19:00–21:00 Jan 2 12:00–20:00 Jan 7 19:00–22:00 Jan 8 00:00–01:00 Jan 10 19:00–20:00, 22:00–23:00 Jan 11 11:00–12:00, 15:00–16:00 Jan 13 19:00–20:00, 23:00–24:00 Jan 14 18:00–24:00 Jan 16 22:00–23:00 Jan 17 11:00–12:00, 14:00–18:00, 21:00–22:00 Jan 21 00:00–01:00, 19:00–23:00 Jan 22 23:00–24:00 Jan 23 19:00–23:00 Jan 24 00:00–01:00, 11:00–12:00, 15:00–17:00 Jan 25 18:00–20:00 Jan 26 19:00–20:00, 22:00–23:00 Jan 27 18:00–23:00 Jan 28 00:00–01:00, 19:00–23:00 Jan 29 00:00–01:00, 18:00–23:00 Jan 30 19:00–21:00 Jan 31 14:00–15:00, 19:00–20:00, 23:00–24:00
February
Feb 1 15:00–18:00 Feb 2 19:00–20:00 Feb 3 19:00–21:00 Feb 4 20:00–21:00 Feb 5 19:00–20:00, 23:00–24:00 Feb 6 00:00–01:00, 20:00–21:00 Feb 7 01:00–02:00, 14:00–16:00, 18:00–19:00 Feb 8 17:00–18:00, 22:00–23:00 Feb 10 00:00–01:00, 20:00–21:00 Feb 11 22:00–24:00 Feb 12 19:00–20:00 Feb 13 19:00–20:00, 22:00–24:00 Feb 14 00:00–01:00, 11:00–13:00, 20:00–21:00 Feb 15 19:00–20:00 Feb 16 11:00–14:00, 16:00–17:00, 19:00–20:00, 22:00–23:00 Feb 17 11:00–12:00, 16:00–20:00 Feb 18 20:00–23:00 Feb 19 00:00–01:00, 20:00–21:00, 23:00–24:00 Feb 20 22:00–23:00 Feb 21 22:00–23:00 Feb 22 14:00–15:00, 22:00–23:00 Feb 23 19:00–20:00, 22:00–24:00 Feb 24 00:00–01:00, 23:00–24:00 Feb 25 20:00–21:00, 23:00–24:00 Feb 26 18:00–20:00, 23:00–24:00 Feb 27 00:00–01:00, 19:00–24:00 Feb 28 00:00–01:00, 16:00–21:00
March
Mar 1 22:00–23:00 Mar 2 20:00–21:00, 23:00–24:00 Mar 3 00:00–01:00, 23:00–24:00 Mar 4 19:00–21:00 Mar 5 20:00–21:00 Mar 7 12:00–16:00, 18:00–20:00 Mar 8 17:00–18:00 Mar 10 19:00–20:00, 22:00–23:00 Mar 11 18:00–19:00 Mar 14 12:00–17:00 Mar 16 20:00–21:00 Mar 18 23:00–24:00 Mar 19 18:00–19:00, 22:00–23:00 Mar 20 20:00–21:00 Mar 21 14:00–15:00 Mar 22 18:00–19:00 Mar 23 18:00–19:00, 23:00–24:00 Mar 24 18:00–19:00, 21:00–24:00 Mar 25 00:00–01:00, 19:00–20:00 Mar 28 19:00–21:00 Mar 29 10:00–11:00, 14:00–20:00 Mar 30 18:00–22:00 Mar 31 17:00–19:00
April
Apr 1 17:00–19:00 Apr 2 18:00–21:00 Apr 3 00:00–01:00, 15:00–17:00 Apr 4 17:00–19:00, 21:00–22:00 Apr 5 10:00–11:00, 13:00–20:00 Apr 6 18:00–19:00 Apr 11 11:00–15:00, 17:00–18:00 Apr 16 18:00–19:00 Apr 17 21:00–23:00 Apr 18 14:00–15:00 Apr 19 15:00–18:00, 20:00–21:00 Apr 20 18:00–19:00, 21:00–24:00 Apr 21 18:00–22:00 Apr 22 19:00–22:00 Apr 23 18:00–24:00 Apr 24 18:00–22:00 Apr 25 10:00–11:00, 13:00–19:00 Apr 26 17:00–20:00 Apr 27 22:00–24:00 Apr 28 18:00–23:00 Apr 29 19:00–20:00, 22:00–24:00 Apr 30 19:00–20:00, 23:00–24:00
May
May 1 00:00–01:00, 20:00–23:00 May 2 11:00–12:00 May 3 19:00–20:00 May 4 18:00–19:00, 22:00–23:00 May 5 18:00–20:00 May 6 19:00–20:00, 22:00–23:00 May 7 18:00–19:00 May 8 19:00–20:00 May 9 17:00–19:00 May 11 18:00–19:00, 21:00–22:00 May 13 19:00–22:00 May 16 13:00–16:00, 18:00–19:00, 21:00–23:00 May 18 18:00–19:00, 21:00–23:00 May 19 17:00–22:00 May 20 18:00–22:00 May 21 18:00–19:00 May 22 18:00–19:00, 23:00–24:00 May 23 13:00–19:00, 21:00–23:00 May 24 16:00–17:00 May 26 19:00–20:00 May 28 18:00–20:00 May 31 15:00–18:00
June
Jun 1 18:00–19:00, 21:00–22:00 Jun 2 18:00–19:00 Jun 3 21:00–22:00 Jun 4 20:00–21:00 Jun 5 20:00–21:00, 23:00–24:00 Jun 6 15:00–16:00, 20:00–22:00 Jun 7 17:00–20:00, 23:00–24:00 Jun 8 18:00–20:00, 22:00–23:00 Jun 9 18:00–20:00 Jun 10 19:00–20:00, 23:00–24:00 Jun 11 00:00–01:00 Jun 12 19:00–21:00 Jun 13 00:00–01:00 Jun 15 17:00–19:00, 21:00–22:00 Jun 16 18:00–24:00 Jun 17 18:00–19:00, 21:00–22:00 Jun 18 17:00–19:00, 21:00–24:00 Jun 19 18:00–20:00, 22:00–23:00 Jun 21 10:00–11:00, 13:00–19:00, 21:00–22:00 Jun 22 18:00–19:00 Jun 23 18:00–20:00 Jun 24 18:00–19:00, 21:00–22:00 Jun 25 21:00–22:00 Jun 26 18:00–24:00 Jun 27 00:00–01:00, 11:00–14:00, 17:00–18:00 Jun 29 19:00–24:00 Jun 30 21:00–22:00
July
Jul 1 19:00–23:00 Jul 2 18:00–24:00 Jul 3 18:00–19:00 Jul 4 18:00–19:00, 23:00–24:00 Jul 5 00:00–02:00, 14:00–22:00 Jul 6 18:00–19:00, 22:00–24:00 Jul 7 22:00–23:00 Jul 8 17:00–18:00, 21:00–22:00 Jul 9 19:00–20:00, 22:00–23:00 Jul 10 18:00–19:00, 21:00–23:00 Jul 11 18:00–23:00 Jul 12 11:00–16:00 Jul 13 21:00–22:00 Jul 14 18:00–20:00, 22:00–23:00 Jul 15 19:00–20:00, 22:00–23:00 Jul 16 19:00–20:00 Jul 17 20:00–21:00, 23:00–24:00 Jul 18 00:00–04:00, 21:00–22:00 Jul 20 19:00–23:00 Jul 21 01:00–02:00, 19:00–22:00 Jul 22 15:00–16:00, 19:00–24:00 Jul 24 00:00–02:00, 20:00–21:00 Jul 25 19:00–24:00 Jul 26 14:00–16:00, 21:00–22:00