Most often in July, 31 days.
Highest follower count seen that year: 10,567.
January
Jan 1 00:00–03:00 Jan 2 12:00–16:00 Jan 3 05:00–07:00, 13:00–15:00 Jan 4 05:00–08:00 Jan 5 05:00–07:00, 13:00–15:00 Jan 6 06:00–07:00, 13:00–14:00 Jan 7 06:00–08:00, 13:00–14:00 Jan 8 06:00–14:00 Jan 9 07:00–14:00, 20:00–21:00 Jan 10 09:00–14:00 Jan 12 05:00–07:00, 12:00–14:00 Jan 13 05:00–13:00 Jan 14 07:00–12:00 Jan 15 05:00–07:00, 12:00–14:00 Jan 16 07:00–12:00 Jan 17 05:00–06:00, 08:00–14:00 Jan 18 05:00–07:00 Jan 20 06:00–08:00, 12:00–15:00 Jan 22 04:00–07:00 Jan 23 04:00–07:00, 12:00–13:00 Jan 24 05:00–08:00 Jan 25 05:00–08:00 Jan 27 05:00–06:00, 12:00–14:00 Jan 28 05:00–14:00 Jan 29 05:00–13:00 Jan 30 08:00–13:00 Jan 31 05:00–06:00, 11:00–14:00
February
Feb 1 06:00–07:00, 13:00–15:00 Feb 2 05:00–07:00 Feb 3 05:00–09:00 Feb 4 05:00–07:00, 12:00–13:00 Feb 5 05:00–07:00 Feb 6 04:00–06:00, 11:00–13:00 Feb 7 05:00–09:00, 11:00–13:00 Feb 8 05:00–08:00 Feb 9 05:00–07:00 Feb 10 07:00–13:00 Feb 11 04:00–06:00, 08:00–12:00 Feb 12 05:00–14:00 Feb 13 07:00–10:00 Feb 14 04:00–13:00 Feb 15 05:00–06:00, 12:00–14:00 Feb 17 07:00–13:00 Feb 18 04:00–14:00 Feb 19 04:00–14:00 Feb 20 08:00–14:00 Feb 21 07:00–13:00 Feb 22 05:00–06:00 Feb 23 05:00–06:00, 11:00–13:00 Feb 25 07:00–09:00, 12:00–14:00 Feb 26 05:00–13:00 Feb 27 07:00–13:00 Feb 28 04:00–09:00
March
Mar 2 06:00–07:00, 12:00–13:00 Mar 3 07:00–13:00 Mar 4 04:00–11:00 Mar 5 08:00–14:00 Mar 6 04:00–13:00 Mar 7 06:00–10:00 Mar 10 05:00–06:00 Mar 11 04:00–14:00 Mar 12 07:00–13:00 Mar 13 05:00–13:00 Mar 14 05:00–12:00 Mar 15 04:00–06:00 Mar 16 12:00–14:00 Mar 17 04:00–09:00 Mar 18 04:00–13:00 Mar 19 08:00–13:00 Mar 20 04:00–06:00, 12:00–14:00 Mar 21 08:00–09:00, 12:00–13:00 Mar 22 12:00–14:00 Mar 23 04:00–06:00, 12:00–13:00 Mar 24 04:00–13:00 Mar 25 05:00–13:00 Mar 26 04:00–08:00, 11:00–13:00 Mar 27 07:00–08:00, 10:00–13:00 Mar 28 05:00–06:00 Mar 29 04:00–06:00
April
Apr 6 11:00–13:00 Apr 13 11:00–12:00 Apr 14 04:00–08:00, 10:00–12:00 Apr 15 04:00–08:00, 10:00–13:00 Apr 16 04:00–08:00 Apr 17 04:00–08:00 Apr 23 03:00–05:00, 11:00–12:00 Apr 24 04:00–07:00, 13:00–14:00 Apr 25 04:00–06:00, 11:00–13:00 Apr 27 04:00–05:00 Apr 28 07:00–12:00 Apr 29 04:00–13:00 Apr 30 06:00–07:00, 11:00–12:00
May
May 1 03:00–06:00 May 2 03:00–06:00, 10:00–11:00 May 3 03:00–06:00 May 5 06:00–12:00 May 6 04:00–12:00 May 7 04:00–12:00 May 8 06:00–07:00, 10:00–12:00 May 9 04:00–12:00 May 10 12:00–13:00 May 11 04:00–06:00 May 12 08:00–10:00 May 13 08:00–13:00 May 14 04:00–12:00 May 15 03:00–04:00, 08:00–12:00 May 16 03:00–12:00 May 17 04:00–05:00 May 18 03:00–06:00 May 19 06:00–12:00 May 20 03:00–12:00 May 21 03:00–12:00 May 22 06:00–13:00 May 23 03:00–05:00, 11:00–13:00 May 24 03:00–04:00 May 25 04:00–05:00 May 26 03:00–05:00, 08:00–12:00 May 27 05:00–13:00 May 28 03:00–05:00, 07:00–12:00 May 29 03:00–12:00 May 30 03:00–04:00, 06:00–12:00 May 31 03:00–05:00, 11:00–13:00
June
Jun 1 04:00–06:00 Jun 2 05:00–12:00 Jun 3 05:00–13:00 Jun 4 03:00–12:00 Jun 5 03:00–05:00, 07:00–12:00 Jun 6 04:00–12:00 Jun 8 19:00–21:00 Jun 9 04:00–06:00, 11:00–12:00 Jun 10 03:00–11:00 Jun 11 06:00–08:00, 11:00–12:00 Jun 12 08:00–13:00 Jun 13 03:00–11:00 Jun 15 03:00–05:00 Jun 16 06:00–09:00, 12:00–13:00 Jun 17 03:00–13:00 Jun 18 03:00–05:00, 10:00–12:00 Jun 19 04:00–10:00 Jun 20 03:00–06:00, 13:00–15:00 Jun 21 03:00–05:00 Jun 23 05:00–13:00 Jun 24 04:00–12:00 Jun 25 04:00–05:00, 07:00–12:00 Jun 26 04:00–09:00, 11:00–12:00 Jun 27 04:00–12:00 Jun 29 03:00–06:00 Jun 30 03:00–12:00
July
Jul 1 04:00–06:00, 12:00–14:00 Jul 2 04:00–12:00 Jul 3 06:00–12:00 Jul 4 04:00–12:00 Jul 5 03:00–05:00, 12:00–15:00 Jul 6 04:00–06:00, 12:00–14:00 Jul 7 03:00–12:00 Jul 8 06:00–13:00 Jul 9 04:00–05:00 Jul 10 03:00–05:00 Jul 11 05:00–12:00 Jul 12 04:00–06:00 Jul 13 04:00–05:00, 11:00–14:00 Jul 14 06:00–07:00, 09:00–12:00 Jul 15 04:00–08:00 Jul 16 04:00–05:00, 07:00–12:00 Jul 17 04:00–09:00 Jul 18 03:00–05:00 Jul 19 03:00–05:00, 13:00–15:00 Jul 20 03:00–05:00, 11:00–14:00 Jul 21 03:00–12:00 Jul 22 03:00–11:00 Jul 23 06:00–12:00 Jul 24 03:00–12:00 Jul 25 03:00–12:00 Jul 26 03:00–07:00, 13:00–14:00 Jul 27 04:00–07:00 Jul 28 12:00–14:00 Jul 29 03:00–06:00, 10:00–14:00 Jul 30 03:00–06:00, 12:00–14:00 Jul 31 03:00–07:00, 12:00–14:00
August
Aug 1 03:00–07:00, 11:00–14:00 Aug 2 03:00–06:00, 11:00–13:00 Aug 3 04:00–07:00, 11:00–13:00 Aug 4 03:00–06:00 Aug 5 06:00–07:00, 12:00–14:00 Aug 6 03:00–07:00, 11:00–13:00 Aug 7 04:00–08:00 Aug 8 04:00–06:00, 11:00–13:00 Aug 9 04:00–05:00 Aug 10 03:00–06:00 Aug 11 03:00–06:00, 11:00–12:00 Aug 12 03:00–05:00 Aug 13 03:00–06:00, 11:00–12:00 Aug 14 04:00–05:00 Aug 15 04:00–07:00 Aug 16 03:00–06:00, 11:00–13:00 Aug 17 03:00–07:00 Aug 18 03:00–06:00, 11:00–13:00 Aug 19 04:00–06:00 Aug 20 04:00–05:00, 11:00–13:00 Aug 21 03:00–06:00, 11:00–12:00 Aug 22 03:00–08:00 Aug 23 04:00–05:00 Aug 24 12:00–13:00 Aug 26 03:00–06:00, 11:00–14:00 Aug 27 03:00–06:00, 12:00–14:00 Aug 28 03:00–06:00 Aug 29 03:00–06:00, 12:00–13:00 Aug 30 03:00–06:00, 11:00–13:00 Aug 31 03:00–07:00, 11:00–14:00
September
Sep 1 03:00–06:00, 11:00–14:00 Sep 2 03:00–06:00, 12:00–14:00 Sep 3 03:00–05:00, 10:00–12:00 Sep 4 03:00–05:00 Sep 5 04:00–07:00, 12:00–14:00 Sep 6 02:00–05:00, 12:00–14:00 Sep 7 03:00–08:00, 13:00–14:00 Sep 8 03:00–05:00, 11:00–13:00 Sep 9 03:00–06:00 Sep 10 03:00–06:00, 11:00–14:00 Sep 11 03:00–06:00, 12:00–13:00 Sep 12 03:00–05:00, 11:00–13:00 Sep 23 04:00–06:00, 12:00–13:00 Sep 24 05:00–13:00 Sep 25 03:00–12:00 Sep 26 03:00–12:00 Sep 27 03:00–06:00 Sep 29 06:00–13:00 Sep 30 04:00–12:00
October
Oct 1 03:00–04:00, 06:00–12:00 Oct 2 03:00–12:00 Oct 3 04:00–05:00, 07:00–13:00 Oct 6 03:00–04:00 Oct 7 03:00–12:00 Oct 8 03:00–05:00, 12:00–13:00 Oct 9 06:00–13:00 Oct 10 06:00–12:00 Oct 11 03:00–04:00, 11:00–14:00 Oct 12 03:00–05:00 Oct 13 06:00–12:00 Oct 14 03:00–08:00 Oct 15 03:00–04:00, 06:00–12:00 Oct 16 04:00–13:00 Oct 17 07:00–13:00 Oct 20 03:00–12:00 Oct 21 06:00–12:00 Oct 22 03:00–04:00, 06:00–12:00 Oct 23 07:00–12:00 Oct 24 06:00–12:00 Oct 25 03:00–04:00 Oct 27 03:00–05:00, 11:00–13:00 Oct 28 11:00–13:00 Oct 29 04:00–06:00 Oct 30 04:00–07:00 Oct 31 13:00–15:00
November
Nov 1 04:00–06:00 Nov 3 07:00–14:00 Nov 4 04:00–06:00, 09:00–14:00 Nov 5 04:00–13:00 Nov 6 05:00–09:00 Nov 7 04:00–06:00, 08:00–12:00 Nov 8 05:00–06:00, 12:00–14:00 Nov 9 04:00–06:00 Nov 10 07:00–13:00 Nov 11 04:00–05:00, 07:00–13:00 Nov 12 04:00–05:00, 07:00–12:00 Nov 13 05:00–13:00 Nov 14 07:00–13:00 Nov 16 04:00–05:00 Nov 17 12:00–14:00 Nov 18 07:00–12:00 Nov 19 07:00–13:00 Nov 20 07:00–13:00 Nov 21 07:00–12:00 Nov 22 04:00–05:00 Nov 24 07:00–14:00 Nov 25 08:00–12:00 Nov 26 07:00–13:00 Nov 27 07:00–11:00, 13:00–15:00 Nov 28 07:00–11:00 Nov 29 13:00–14:00, 21:00–23:00
December
Dec 1 04:00–06:00 Dec 2 07:00–12:00 Dec 3 07:00–11:00 Dec 4 07:00–14:00 Dec 5 07:00–13:00, 22:00–24:00 Dec 8 07:00–12:00 Dec 9 04:00–05:00, 07:00–12:00 Dec 10 07:00–12:00 Dec 11 08:00–12:00 Dec 12 04:00–05:00, 07:00–11:00 Dec 13 05:00–06:00 Dec 14 06:00–07:00, 13:00–14:00, 21:00–22:00 Dec 15 07:00–13:00 Dec 17 07:00–13:00 Dec 18 07:00–10:00 Dec 23 06:00–07:00 Dec 24 06:00–07:00 Dec 26 13:00–14:00 Dec 27 05:00–06:00, 13:00–14:00, 21:00–23:00 Dec 28 22:00–24:00 Dec 29 22:00–24:00 Dec 30 00:00–01:00, 14:00–15:00