Most often in October, 31 days.
Highest follower count seen that year: 12,818.
January
Jan 20 03:00–11:00 Jan 21 03:00–11:00 Jan 22 04:00–11:00 Jan 23 03:00–11:00 Jan 24 03:00–10:00 Jan 25 04:00–11:00 Jan 27 01:00–11:00 Jan 28 04:00–07:00 Jan 29 03:00–12:00 Jan 30 04:00–11:00 Jan 31 04:00–12:00
February
Feb 1 03:00–13:00 Feb 3 00:00–11:00 Feb 4 04:00–11:00 Feb 5 04:00–11:00 Feb 6 03:00–12:00 Feb 7 03:00–11:00 Feb 8 03:00–11:00 Feb 9 04:00–13:00 Feb 10 02:00–11:00 Feb 11 03:00–10:00 Feb 12 03:00–13:00 Feb 13 04:00–16:00 Feb 14 04:00–12:00 Feb 15 03:00–13:00 Feb 17 03:00–11:00 Feb 18 03:00–14:00 Feb 19 04:00–12:00 Feb 20 03:00–14:00 Feb 21 05:00–12:00 Feb 22 03:00–12:00 Feb 24 03:00–13:00 Feb 25 04:00–12:00 Feb 26 03:00–11:00 Feb 27 03:00–12:00 Feb 28 03:00–13:00
March
Mar 1 04:00–13:00 Mar 2 04:00–11:00 Mar 3 03:00–12:00 Mar 4 03:00–12:00 Mar 6 04:00–11:00 Mar 7 03:00–13:00 Mar 8 03:00–11:00 Mar 9 04:00–13:00 Mar 10 01:00–13:00 Mar 11 03:00–12:00 Mar 12 03:00–12:00 Mar 13 03:00–11:00 Mar 14 03:00–11:00 Mar 15 04:00–11:00 Mar 17 04:00–11:00 Mar 18 03:00–11:00 Mar 19 03:00–11:00 Mar 22 03:00–12:00 Mar 23 03:00–12:00 Mar 24 00:00–11:00 Mar 25 03:00–11:00 Mar 26 03:00–11:00 Mar 27 03:00–11:00 Mar 28 03:00–11:00 Mar 29 03:00–11:00 Mar 31 03:00–11:00
April
Apr 1 03:00–11:00 Apr 2 03:00–11:00 Apr 3 04:00–14:00 Apr 4 03:00–11:00 Apr 5 04:00–11:00 Apr 7 04:00–11:00 Apr 8 03:00–11:00 Apr 9 03:00–11:00 Apr 11 04:00–11:00 Apr 12 03:00–11:00 Apr 13 04:00–11:00 Apr 14 03:00–13:00 Apr 15 04:00–11:00 Apr 16 03:00–11:00 Apr 17 03:00–12:00 Apr 18 04:00–12:00 Apr 22 03:00–11:00 Apr 23 04:00–11:00 Apr 24 04:00–11:00 Apr 25 00:00–10:00 Apr 26 03:00–11:00 Apr 28 04:00–11:00 Apr 29 00:00–10:00 Apr 30 03:00–11:00
May
May 2 03:00–06:00, 08:00–11:00 May 3 04:00–11:00 May 4 04:00–10:00 May 5 04:00–10:00 May 6 01:00–11:00 May 7 04:00–11:00 May 8 03:00–11:00 May 10 19:00–24:00 May 11 00:00–10:00 May 12 19:00–24:00 May 13 01:00–07:00, 19:00–23:00 May 14 00:00–02:00, 19:00–24:00 May 15 00:00–03:00, 20:00–24:00 May 16 00:00–03:00, 20:00–24:00 May 17 00:00–07:00, 20:00–24:00 May 18 00:00–06:00 May 19 20:00–24:00 May 20 00:00–03:00, 15:00–21:00 May 24 20:00–24:00 May 25 00:00–03:00, 11:00–17:00 May 26 21:00–24:00 May 27 00:00–03:00, 19:00–24:00 May 28 00:00–02:00, 20:00–24:00 May 29 00:00–03:00, 19:00–24:00 May 30 00:00–03:00 May 31 19:00–24:00
June
Jun 1 00:00–03:00, 13:00–22:00 Jun 2 19:00–24:00 Jun 3 00:00–03:00, 18:00–24:00 Jun 4 00:00–01:00, 19:00–24:00 Jun 5 00:00–01:00, 18:00–24:00 Jun 6 00:00–02:00, 18:00–24:00 Jun 7 00:00–02:00, 19:00–24:00 Jun 8 00:00–02:00, 13:00–17:00 Jun 9 18:00–24:00 Jun 10 00:00–02:00, 19:00–24:00 Jun 11 00:00–02:00 Jun 12 21:00–24:00 Jun 13 00:00–02:00, 21:00–24:00 Jun 14 00:00–02:00, 20:00–24:00 Jun 15 00:00–02:00, 12:00–20:00 Jun 16 19:00–24:00 Jun 17 00:00–01:00, 18:00–24:00 Jun 18 00:00–03:00, 18:00–24:00 Jun 19 19:00–24:00 Jun 20 00:00–02:00, 18:00–24:00 Jun 21 00:00–02:00, 19:00–24:00 Jun 24 19:00–24:00 Jun 25 00:00–03:00, 19:00–24:00 Jun 26 00:00–02:00 Jun 27 17:00–24:00 Jun 28 00:00–03:00, 18:00–24:00 Jun 29 00:00–02:00, 21:00–24:00 Jun 30 00:00–03:00, 19:00–24:00
July
Jul 1 00:00–02:00, 18:00–24:00 Jul 2 00:00–02:00, 18:00–24:00 Jul 3 00:00–03:00, 18:00–24:00 Jul 4 00:00–02:00, 16:00–23:00 Jul 7 18:00–24:00 Jul 8 00:00–03:00, 19:00–24:00 Jul 9 00:00–02:00, 19:00–24:00 Jul 10 00:00–02:00, 19:00–24:00 Jul 11 00:00–02:00, 19:00–24:00 Jul 12 00:00–08:00 Jul 14 19:00–24:00 Jul 15 00:00–02:00, 19:00–24:00 Jul 16 00:00–02:00, 19:00–24:00 Jul 17 00:00–02:00, 18:00–24:00 Jul 18 00:00–03:00, 18:00–24:00 Jul 19 00:00–02:00, 20:00–24:00 Jul 20 00:00–02:00, 18:00–24:00 Jul 21 18:00–24:00 Jul 22 00:00–02:00, 19:00–24:00 Jul 23 00:00–03:00, 19:00–24:00 Jul 24 00:00–03:00, 19:00–24:00 Jul 25 00:00–02:00, 19:00–24:00 Jul 26 00:00–03:00, 17:00–24:00 Jul 28 19:00–24:00 Jul 29 00:00–03:00, 19:00–24:00 Jul 30 01:00–02:00, 20:00–24:00 Jul 31 00:00–03:00, 19:00–23:00
August
Aug 1 00:00–03:00, 20:00–23:00 Aug 2 00:00–03:00, 20:00–24:00 Aug 3 00:00–08:00, 16:00–22:00 Aug 4 20:00–24:00 Aug 5 19:00–24:00 Aug 6 00:00–03:00, 20:00–24:00 Aug 7 00:00–03:00, 19:00–24:00 Aug 8 00:00–02:00, 19:00–24:00 Aug 9 00:00–03:00, 21:00–24:00 Aug 10 00:00–03:00, 12:00–21:00 Aug 11 17:00–24:00 Aug 12 00:00–02:00, 19:00–24:00 Aug 13 00:00–02:00 Aug 18 19:00–24:00 Aug 19 00:00–03:00, 19:00–24:00 Aug 20 00:00–02:00, 19:00–24:00 Aug 21 00:00–03:00 Aug 22 19:00–24:00 Aug 23 00:00–02:00, 19:00–24:00 Aug 24 00:00–03:00, 19:00–24:00 Aug 25 00:00–03:00, 19:00–23:00 Aug 26 00:00–03:00, 19:00–23:00 Aug 27 00:00–01:00, 19:00–24:00 Aug 28 00:00–02:00, 17:00–24:00 Aug 29 00:00–02:00, 18:00–23:00 Aug 30 00:00–03:00, 19:00–24:00 Aug 31 00:00–10:00
September
Sep 4 20:00–24:00 Sep 5 00:00–06:00, 18:00–24:00 Sep 6 14:00–20:00 Sep 7 20:00–24:00 Sep 8 00:00–03:00, 19:00–24:00 Sep 9 00:00–02:00, 19:00–24:00 Sep 10 00:00–03:00, 18:00–24:00 Sep 11 00:00–02:00, 19:00–23:00 Sep 12 00:00–02:00, 19:00–24:00 Sep 13 00:00–03:00, 20:00–24:00 Sep 14 00:00–07:00 Sep 15 20:00–24:00 Sep 16 00:00–03:00, 20:00–24:00 Sep 17 00:00–03:00, 20:00–24:00 Sep 18 00:00–03:00, 19:00–24:00 Sep 19 00:00–03:00, 21:00–24:00 Sep 20 00:00–03:00, 20:00–24:00 Sep 21 00:00–04:00 Sep 22 19:00–24:00 Sep 23 00:00–03:00, 19:00–24:00 Sep 24 00:00–03:00, 22:00–24:00 Sep 25 00:00–02:00, 19:00–24:00 Sep 26 00:00–04:00, 20:00–24:00 Sep 27 00:00–01:00, 20:00–24:00 Sep 28 00:00–03:00 Sep 29 19:00–24:00 Sep 30 00:00–03:00, 19:00–24:00
October
Oct 1 00:00–03:00, 20:00–24:00 Oct 2 00:00–03:00, 19:00–24:00 Oct 3 00:00–03:00 Oct 4 20:00–24:00 Oct 5 00:00–11:00 Oct 6 20:00–24:00 Oct 7 00:00–03:00, 20:00–24:00 Oct 8 00:00–03:00, 20:00–24:00 Oct 9 00:00–03:00, 20:00–24:00 Oct 10 00:00–03:00, 20:00–23:00 Oct 11 00:00–03:00, 19:00–24:00 Oct 12 00:00–12:00, 21:00–24:00 Oct 13 20:00–24:00 Oct 14 00:00–04:00, 20:00–24:00 Oct 15 00:00–03:00, 19:00–24:00 Oct 16 00:00–03:00 Oct 17 19:00–24:00 Oct 18 00:00–03:00, 19:00–24:00 Oct 19 00:00–11:00 Oct 20 19:00–24:00 Oct 21 00:00–03:00, 19:00–24:00 Oct 22 00:00–03:00, 20:00–24:00 Oct 23 00:00–03:00, 19:00–24:00 Oct 24 00:00–02:00, 19:00–24:00 Oct 25 00:00–03:00, 20:00–24:00 Oct 26 00:00–03:00 Oct 27 19:00–24:00 Oct 28 00:00–03:00, 20:00–24:00 Oct 29 00:00–03:00, 16:00–22:00 Oct 30 20:00–24:00 Oct 31 00:00–03:00, 20:00–24:00
November
Nov 1 00:00–05:00, 20:00–24:00 Nov 2 00:00–04:00 Nov 3 19:00–24:00 Nov 4 00:00–03:00 Nov 5 20:00–24:00 Nov 6 00:00–03:00, 20:00–24:00 Nov 7 00:00–01:00, 21:00–23:00 Nov 8 00:00–03:00, 19:00–24:00 Nov 9 00:00–10:00 Nov 10 19:00–24:00 Nov 11 00:00–03:00, 19:00–24:00 Nov 12 00:00–03:00, 19:00–24:00 Nov 13 00:00–03:00, 20:00–24:00 Nov 14 00:00–02:00, 19:00–24:00 Nov 15 00:00–02:00, 19:00–24:00 Nov 16 00:00–07:00 Nov 17 19:00–24:00 Nov 18 00:00–03:00, 17:00–21:00 Nov 20 19:00–24:00 Nov 21 00:00–02:00, 20:00–24:00 Nov 22 00:00–03:00, 19:00–24:00 Nov 23 00:00–03:00, 14:00–23:00 Nov 24 19:00–24:00 Nov 25 00:00–04:00, 19:00–24:00 Nov 26 00:00–03:00, 20:00–24:00 Nov 27 00:00–04:00, 19:00–24:00 Nov 28 00:00–02:00, 19:00–24:00 Nov 29 00:00–03:00, 18:00–24:00 Nov 30 00:00–02:00
December
Dec 1 19:00–24:00 Dec 2 00:00–03:00, 19:00–24:00 Dec 3 00:00–03:00, 20:00–24:00 Dec 4 00:00–03:00, 19:00–24:00 Dec 5 00:00–03:00, 19:00–24:00 Dec 6 00:00–03:00, 20:00–24:00 Dec 7 01:00–03:00, 12:00–19:00 Dec 8 19:00–24:00 Dec 9 00:00–03:00 Dec 11 19:00–24:00 Dec 12 00:00–02:00, 19:00–24:00 Dec 13 00:00–03:00, 20:00–24:00 Dec 14 00:00–03:00, 17:00–24:00 Dec 15 00:00–02:00, 19:00–24:00 Dec 16 00:00–03:00, 19:00–24:00 Dec 17 00:00–03:00, 20:00–24:00 Dec 18 00:00–03:00, 20:00–24:00 Dec 19 00:00–02:00, 20:00–24:00 Dec 20 00:00–01:00, 20:00–24:00 Dec 21 00:00–03:00 Dec 22 20:00–24:00 Dec 23 00:00–03:00, 19:00–24:00 Dec 24 00:00–03:00, 17:00–23:00 Dec 26 19:00–24:00 Dec 27 00:00–03:00, 19:00–24:00 Dec 28 00:00–03:00, 22:00–24:00 Dec 29 00:00–02:00, 16:00–24:00 Dec 30 00:00–03:00, 14:00–19:00