Most often in November, 28 days.
Highest follower count seen that year: 118,068.
January
Jan 3 15:00–16:00 Jan 4 14:00–17:00 Jan 5 13:00–18:00 Jan 6 04:00–07:00 Jan 7 17:00–21:00 Jan 8 08:00–11:00, 16:00–18:00 Jan 9 18:00–20:00 Jan 10 06:00–09:00, 17:00–19:00 Jan 11 07:00–09:00, 14:00–16:00 Jan 12 10:00–17:00 Jan 13 15:00–18:00 Jan 16 15:00–19:00 Jan 17 07:00–10:00, 16:00–18:00 Jan 18 19:00–21:00 Jan 19 14:00–17:00 Jan 20 07:00–09:00 Jan 21 07:00–10:00, 18:00–20:00 Jan 22 18:00–21:00 Jan 23 14:00–19:00 Jan 24 06:00–09:00 Jan 25 09:00–12:00 Jan 26 19:00–21:00 Jan 27 07:00–10:00, 16:00–19:00 Jan 28 14:00–19:00 Jan 29 12:00–15:00 Jan 30 14:00–20:00
February
Feb 3 18:00–20:00 Feb 4 14:00–16:00 Feb 5 18:00–20:00 Feb 6 06:00–09:00, 14:00–16:00 Feb 7 11:00–14:00 Feb 9 10:00–14:00 Feb 10 14:00–19:00 Feb 11 13:00–16:00, 18:00–21:00 Feb 12 16:00–20:00 Feb 13 16:00–18:00 Feb 15 07:00–10:00 Feb 16 11:00–14:00 Feb 17 06:00–08:00, 17:00–19:00 Feb 18 05:00–08:00, 12:00–15:00 Feb 24 06:00–09:00, 12:00–15:00 Feb 25 13:00–16:00 Feb 26 09:00–12:00 Feb 27 13:00–15:00 Feb 28 13:00–17:00
March
Mar 1 07:00–11:00 Mar 2 10:00–13:00 Mar 3 06:00–08:00, 12:00–15:00 Mar 4 05:00–09:00, 18:00–20:00 Mar 5 10:00–13:00 Mar 6 12:00–16:00 Mar 7 16:00–19:00 Mar 10 16:00–19:00 Mar 11 15:00–18:00 Mar 12 10:00–13:00 Mar 13 14:00–18:00 Mar 14 12:00–15:00 Mar 15 11:00–13:00 Mar 16 11:00–14:00 Mar 17 12:00–18:00 Mar 19 07:00–09:00, 16:00–20:00 Mar 20 12:00–14:00 Mar 21 05:00–09:00, 13:00–15:00 Mar 24 12:00–20:00 Mar 25 12:00–21:00 Mar 26 08:00–10:00, 16:00–21:00 Mar 27 12:00–17:00 Mar 28 13:00–17:00 Mar 29 10:00–14:00 Mar 30 12:00–15:00 Mar 31 04:00–06:00
April
Apr 1 11:00–15:00, 17:00–19:00 Apr 2 05:00–09:00 Apr 7 15:00–17:00 Apr 8 11:00–15:00 Apr 9 07:00–12:00, 16:00–18:00 Apr 10 12:00–18:00 Apr 12 11:00–14:00 Apr 13 16:00–20:00 Apr 14 04:00–08:00 Apr 15 05:00–08:00 Apr 16 09:00–13:00 Apr 17 04:00–07:00 Apr 18 11:00–13:00 Apr 19 08:00–12:00 Apr 22 11:00–14:00 Apr 23 10:00–12:00, 15:00–17:00 Apr 24 09:00–12:00, 15:00–18:00 Apr 25 11:00–14:00 Apr 26 10:00–13:00 Apr 27 10:00–14:00 Apr 29 11:00–15:00
May
May 4 10:00–14:00 May 5 12:00–14:00, 17:00–20:00 May 6 11:00–14:00, 16:00–19:00 May 7 09:00–12:00, 16:00–18:00 May 8 11:00–19:00 May 9 11:00–17:00 May 10 10:00–15:00 May 11 12:00–17:00 May 12 11:00–14:00 May 13 04:00–06:00 May 17 06:00–08:00, 11:00–15:00 May 18 09:00–12:00 May 19 11:00–14:00 May 20 15:00–19:00 May 21 15:00–19:00 May 22 15:00–18:00 May 23 09:00–13:00 May 24 12:00–16:00 May 25 10:00–13:00 May 26 11:00–14:00 May 27 04:00–06:00, 08:00–11:00 May 28 08:00–13:00 May 29 04:00–08:00
June
Jun 1 15:00–18:00 Jun 2 16:00–19:00 Jun 3 17:00–19:00 Jun 4 11:00–14:00, 16:00–17:00 Jun 5 08:00–10:00, 14:00–18:00 Jun 6 14:00–17:00 Jun 7 10:00–13:00 Jun 8 11:00–14:00 Jun 9 06:00–10:00, 15:00–17:00 Jun 10 07:00–11:00 Jun 11 09:00–12:00 Jun 12 11:00–13:00, 16:00–17:00 Jun 14 04:00–05:00 Jun 15 14:00–17:00 Jun 16 15:00–18:00 Jun 17 13:00–15:00 Jun 18 11:00–17:00 Jun 19 10:00–11:00, 18:00–20:00 Jun 20 13:00–17:00 Jun 21 04:00–08:00 Jun 22 14:00–17:00 Jun 23 06:00–08:00, 13:00–17:00 Jun 30 05:00–10:00, 16:00–17:00
July
Jul 1 13:00–15:00 Jul 2 09:00–13:00 Jul 3 13:00–18:00 Jul 4 17:00–20:00 Jul 5 05:00–09:00, 11:00–14:00 Jul 6 05:00–08:00 Jul 7 13:00–15:00 Jul 8 16:00–19:00 Jul 10 18:00–19:00 Jul 11 05:00–07:00 Jul 13 13:00–17:00 Jul 14 15:00–19:00 Jul 15 07:00–09:00, 13:00–16:00 Jul 16 10:00–15:00 Jul 17 13:00–17:00 Jul 18 14:00–19:00 Jul 20 06:00–08:00, 11:00–15:00 Jul 21 06:00–08:00, 12:00–18:00 Jul 22 05:00–08:00, 15:00–18:00 Jul 23 08:00–10:00, 17:00–18:00 Jul 24 03:00–06:00 Jul 31 15:00–17:00
August
Aug 1 06:00–09:00, 15:00–18:00 Aug 2 05:00–07:00 Aug 5 17:00–20:00 Aug 6 06:00–08:00, 13:00–15:00 Aug 7 05:00–09:00 Aug 8 05:00–08:00, 11:00–13:00 Aug 9 11:00–14:00, 16:00–19:00 Aug 10 04:00–07:00 Aug 11 11:00–14:00 Aug 12 13:00–17:00 Aug 13 09:00–12:00 Aug 14 12:00–17:00 Aug 15 13:00–15:00
September
Sep 1 03:00–08:00, 15:00–17:00 Sep 2 12:00–16:00 Sep 3 05:00–08:00 Sep 4 04:00–06:00 Sep 5 04:00–07:00, 11:00–14:00 Sep 6 13:00–16:00 Sep 7 17:00–20:00 Sep 8 17:00–19:00 Sep 9 15:00–18:00 Sep 10 10:00–15:00 Sep 11 13:00–17:00 Sep 13 11:00–15:00 Sep 14 05:00–07:00 Sep 15 05:00–09:00 Sep 22 13:00–18:00 Sep 23 13:00–17:00 Sep 24 13:00–17:00 Sep 25 05:00–09:00 Sep 28 14:00–17:00 Sep 29 05:00–08:00, 14:00–15:00 Sep 30 03:00–08:00
October
Oct 1 05:00–12:00 Oct 2 15:00–18:00 Oct 3 14:00–16:00 Oct 4 11:00–15:00 Oct 5 06:00–09:00, 12:00–13:00 Oct 6 05:00–07:00 Oct 7 06:00–08:00, 13:00–18:00 Oct 8 09:00–13:00, 16:00–19:00 Oct 9 12:00–16:00 Oct 10 10:00–15:00 Oct 11 05:00–08:00, 10:00–12:00 Oct 12 05:00–08:00, 10:00–13:00 Oct 13 11:00–16:00 Oct 14 04:00–06:00 Oct 15 04:00–07:00 Oct 16 09:00–13:00 Oct 20 11:00–18:00 Oct 21 04:00–07:00, 11:00–16:00 Oct 22 08:00–12:00 Oct 23 13:00–17:00 Oct 24 13:00–16:00 Oct 25 05:00–07:00, 10:00–13:00 Oct 27 04:00–06:00, 13:00–17:00 Oct 28 05:00–07:00, 15:00–18:00 Oct 29 06:00–11:00 Oct 30 05:00–08:00, 11:00–12:00 Oct 31 14:00–17:00
November
Nov 1 06:00–08:00 Nov 2 06:00–09:00, 12:00–14:00 Nov 3 05:00–08:00, 12:00–16:00 Nov 4 15:00–19:00 Nov 5 11:00–16:00 Nov 6 16:00–19:00 Nov 7 05:00–09:00 Nov 8 06:00–08:00, 15:00–18:00 Nov 9 06:00–09:00, 11:00–15:00 Nov 10 05:00–08:00, 12:00–15:00 Nov 11 06:00–09:00, 17:00–19:00 Nov 12 05:00–07:00, 10:00–13:00, 16:00–18:00 Nov 13 16:00–19:00 Nov 16 17:00–21:00 Nov 17 05:00–08:00, 16:00–18:00 Nov 18 13:00–16:00 Nov 19 10:00–14:00 Nov 20 15:00–18:00 Nov 21 05:00–07:00, 16:00–19:00 Nov 22 11:00–15:00 Nov 23 06:00–09:00, 13:00–16:00 Nov 24 05:00–10:00, 16:00–18:00 Nov 25 16:00–20:00 Nov 26 05:00–09:00, 15:00–19:00 Nov 27 16:00–19:00 Nov 28 05:00–09:00, 17:00–19:00 Nov 29 10:00–15:00 Nov 30 12:00–15:00
December
Dec 1 17:00–20:00 Dec 2 13:00–18:00 Dec 3 08:00–12:00, 15:00–19:00 Dec 4 16:00–20:00 Dec 5 06:00–09:00, 16:00–20:00 Dec 6 06:00–08:00 Dec 7 06:00–09:00, 12:00–13:00 Dec 8 15:00–18:00 Dec 9 07:00–11:00, 16:00–19:00 Dec 10 04:00–07:00 Dec 11 12:00–14:00 Dec 12 05:00–08:00 Dec 13 11:00–15:00 Dec 14 15:00–18:00 Dec 19 15:00–18:00 Dec 30 08:00–11:00, 14:00–16:00 Dec 31 10:00–14:00