Most often in August, 31 days.
Highest follower count seen that year: 36,787.
January
Jan 1 17:00–22:00 Jan 2 20:00–21:00, 23:00–24:00 Jan 3 00:00–02:00, 18:00–24:00 Jan 4 00:00–01:00, 14:00–24:00 Jan 6 19:00–24:00 Jan 7 14:00–15:00, 18:00–24:00 Jan 8 17:00–24:00 Jan 10 19:00–24:00 Jan 11 00:00–01:00, 19:00–24:00 Jan 12 00:00–02:00, 19:00–24:00 Jan 13 00:00–03:00, 19:00–24:00 Jan 14 00:00–01:00, 20:00–24:00 Jan 15 00:00–03:00 Jan 16 19:00–23:00 Jan 17 00:00–04:00, 19:00–24:00 Jan 18 00:00–03:00, 20:00–24:00 Jan 19 00:00–03:00, 19:00–24:00 Jan 20 00:00–03:00, 19:00–24:00 Jan 21 01:00–02:00, 19:00–24:00 Jan 23 19:00–22:00 Jan 24 19:00–24:00 Jan 25 18:00–23:00 Jan 26 03:00–05:00, 19:00–24:00 Jan 27 00:00–02:00, 20:00–24:00 Jan 28 19:00–24:00 Jan 29 00:00–03:00 Jan 30 19:00–24:00 Jan 31 19:00–24:00
February
Feb 1 00:00–07:00, 19:00–24:00 Feb 2 00:00–01:00, 04:00–05:00, 19:00–24:00 Feb 3 00:00–04:00, 19:00–24:00 Feb 4 00:00–06:00, 19:00–24:00 Feb 5 00:00–04:00 Feb 6 20:00–24:00 Feb 7 00:00–06:00, 19:00–24:00 Feb 8 00:00–04:00, 19:00–24:00 Feb 9 00:00–08:00, 19:00–24:00 Feb 10 00:00–07:00, 19:00–24:00 Feb 11 19:00–24:00 Feb 12 00:00–03:00 Feb 13 19:00–24:00 Feb 14 00:00–05:00, 20:00–23:00 Feb 16 20:00–24:00 Feb 17 00:00–02:00 Feb 18 06:00–13:00, 20:00–24:00 Feb 20 19:00–24:00 Feb 21 00:00–07:00, 20:00–24:00 Feb 22 00:00–03:00, 09:00–10:00, 20:00–24:00 Feb 23 06:00–14:00, 19:00–24:00 Feb 24 00:00–04:00, 19:00–24:00 Feb 25 00:00–05:00, 19:00–24:00 Feb 26 00:00–01:00 Feb 27 19:00–22:00 Feb 28 19:00–24:00
March
Mar 1 19:00–24:00 Mar 2 00:00–02:00, 19:00–24:00 Mar 3 00:00–01:00, 19:00–22:00 Mar 4 19:00–23:00 Mar 6 19:00–24:00 Mar 7 00:00–02:00, 19:00–24:00 Mar 8 00:00–05:00, 19:00–24:00 Mar 9 00:00–03:00, 19:00–24:00 Mar 10 19:00–24:00 Mar 11 00:00–01:00, 19:00–24:00 Mar 12 00:00–01:00 Mar 13 19:00–24:00 Mar 14 19:00–24:00 Mar 15 00:00–02:00, 19:00–24:00 Mar 16 00:00–02:00, 19:00–24:00 Mar 17 00:00–03:00, 19:00–24:00 Mar 18 00:00–04:00, 19:00–24:00 Mar 19 00:00–03:00 Mar 20 18:00–24:00 Mar 21 00:00–03:00, 19:00–24:00 Mar 22 00:00–05:00, 19:00–24:00 Mar 23 00:00–03:00, 18:00–21:00, 23:00–24:00 Mar 24 00:00–02:00 Mar 25 19:00–23:00 Mar 26 00:00–01:00 Mar 27 19:00–23:00 Mar 29 19:00–24:00 Mar 30 00:00–06:00, 18:00–24:00 Mar 31 00:00–03:00, 18:00–24:00
April
Apr 1 00:00–02:00, 18:00–24:00 Apr 2 07:00–09:00 Apr 3 21:00–24:00 Apr 4 00:00–05:00, 16:00–18:00, 23:00–24:00 Apr 5 00:00–04:00, 18:00–20:00 Apr 6 20:00–24:00 Apr 7 00:00–01:00, 15:00–23:00 Apr 8 19:00–24:00 Apr 9 00:00–02:00 Apr 11 14:00–15:00 Apr 12 01:00–07:00, 09:00–13:00, 17:00–23:00 Apr 13 11:00–15:00, 17:00–21:00 Apr 14 00:00–03:00, 09:00–11:00, 15:00–16:00, 18:00–23:00 Apr 15 09:00–17:00 Apr 16 03:00–05:00, 10:00–18:00 Apr 17 02:00–05:00, 10:00–12:00, 21:00–23:00 Apr 18 02:00–08:00, 15:00–20:00, 23:00–24:00 Apr 19 00:00–02:00, 04:00–07:00, 12:00–22:00 Apr 20 02:00–04:00, 10:00–13:00, 17:00–21:00 Apr 21 03:00–04:00, 09:00–22:00 Apr 22 04:00–07:00, 10:00–12:00, 15:00–22:00 Apr 23 08:00–10:00, 14:00–18:00 Apr 24 17:00–22:00 Apr 25 16:00–22:00 Apr 26 08:00–09:00, 14:00–16:00 Apr 30 15:00–20:00
May
May 1 09:00–10:00, 17:00–19:00 May 2 16:00–22:00 May 4 17:00–19:00 May 5 19:00–24:00 May 6 19:00–24:00 May 9 15:00–20:00, 23:00–24:00 May 10 00:00–01:00, 19:00–24:00 May 11 16:00–21:00 May 12 13:00–14:00, 17:00–20:00 May 13 16:00–22:00 May 15 17:00–18:00, 20:00–23:00 May 16 18:00–22:00 May 17 18:00–24:00 May 18 19:00–24:00 May 19 17:00–23:00 May 21 17:00–23:00 May 22 00:00–02:00, 18:00–23:00 May 23 18:00–24:00 May 24 00:00–01:00, 18:00–23:00 May 25 00:00–02:00, 15:00–24:00 May 26 03:00–05:00, 16:00–24:00 May 27 00:00–02:00, 09:00–20:00, 23:00–24:00 May 28 00:00–01:00, 14:00–16:00, 18:00–24:00 May 29 00:00–05:00, 12:00–15:00, 18:00–24:00 May 30 02:00–04:00, 19:00–24:00 May 31 00:00–01:00, 14:00–15:00, 17:00–24:00
June
Jun 1 00:00–03:00, 13:00–14:00, 18:00–24:00 Jun 2 00:00–02:00, 16:00–24:00 Jun 3 00:00–02:00, 19:00–24:00 Jun 4 17:00–24:00 Jun 5 01:00–02:00, 18:00–21:00 Jun 6 16:00–22:00 Jun 7 02:00–03:00, 19:00–24:00 Jun 8 03:00–04:00, 19:00–21:00 Jun 9 13:00–14:00, 16:00–20:00 Jun 13 19:00–24:00 Jun 14 00:00–01:00 Jun 15 19:00–22:00 Jun 16 19:00–24:00 Jun 17 20:00–21:00 Jun 18 23:00–24:00 Jun 19 00:00–03:00, 13:00–14:00, 20:00–24:00 Jun 20 00:00–03:00, 20:00–22:00 Jun 21 19:00–20:00, 23:00–24:00 Jun 22 00:00–02:00, 05:00–08:00, 21:00–24:00 Jun 23 16:00–21:00, 23:00–24:00 Jun 25 20:00–22:00 Jun 26 20:00–24:00 Jun 27 03:00–04:00, 14:00–23:00 Jun 28 04:00–05:00, 15:00–24:00 Jun 29 04:00–05:00, 11:00–12:00, 20:00–22:00 Jun 30 08:00–12:00, 18:00–22:00
July
Jul 4 16:00–22:00 Jul 5 12:00–22:00 Jul 6 11:00–14:00, 16:00–23:00 Jul 7 11:00–14:00, 16:00–18:00 Jul 8 20:00–23:00 Jul 9 13:00–17:00, 19:00–23:00 Jul 10 16:00–24:00 Jul 11 15:00–22:00 Jul 12 01:00–02:00, 15:00–23:00 Jul 13 14:00–24:00 Jul 14 00:00–01:00, 15:00–16:00, 19:00–22:00 Jul 15 18:00–20:00 Jul 17 18:00–23:00 Jul 18 14:00–17:00, 20:00–24:00 Jul 19 14:00–23:00 Jul 20 00:00–02:00, 15:00–24:00 Jul 21 20:00–23:00 Jul 22 17:00–22:00 Jul 23 01:00–02:00, 22:00–23:00 Jul 24 15:00–16:00, 18:00–21:00, 23:00–24:00 Jul 25 00:00–03:00, 16:00–24:00 Jul 26 00:00–01:00, 17:00–24:00 Jul 27 21:00–22:00 Jul 28 18:00–22:00 Jul 29 00:00–01:00, 17:00–19:00, 21:00–24:00 Jul 30 18:00–24:00 Jul 31 03:00–05:00, 21:00–24:00
August
Aug 1 00:00–02:00, 15:00–23:00 Aug 2 00:00–01:00, 15:00–24:00 Aug 3 00:00–03:00, 05:00–07:00, 17:00–24:00 Aug 4 00:00–02:00, 20:00–23:00 Aug 5 13:00–20:00 Aug 6 18:00–21:00, 23:00–24:00 Aug 7 00:00–04:00, 20:00–22:00 Aug 8 02:00–03:00, 19:00–24:00 Aug 9 16:00–18:00, 23:00–24:00 Aug 10 17:00–19:00 Aug 11 21:00–24:00 Aug 12 00:00–03:00, 18:00–23:00 Aug 13 17:00–22:00 Aug 14 01:00–03:00, 18:00–19:00, 22:00–23:00 Aug 15 23:00–24:00 Aug 16 17:00–20:00 Aug 17 02:00–04:00, 18:00–23:00 Aug 18 00:00–03:00, 19:00–24:00 Aug 19 00:00–01:00, 21:00–23:00 Aug 20 00:00–02:00, 20:00–24:00 Aug 21 01:00–03:00, 17:00–18:00 Aug 22 04:00–06:00, 11:00–13:00, 17:00–18:00, 22:00–24:00 Aug 23 06:00–07:00, 13:00–15:00 Aug 24 04:00–05:00, 11:00–12:00, 19:00–21:00 Aug 25 03:00–05:00, 14:00–15:00, 17:00–20:00 Aug 26 12:00–17:00 Aug 27 02:00–03:00, 06:00–09:00, 15:00–18:00 Aug 28 04:00–05:00, 12:00–13:00, 15:00–16:00 Aug 29 08:00–17:00 Aug 30 07:00–09:00, 15:00–18:00 Aug 31 07:00–08:00, 10:00–11:00
September
Sep 1 08:00–09:00, 14:00–16:00 Sep 2 17:00–18:00 Sep 3 11:00–13:00 Sep 4 07:00–09:00, 15:00–18:00 Sep 5 07:00–08:00, 12:00–13:00, 17:00–20:00 Sep 6 08:00–09:00, 15:00–16:00 Sep 9 09:00–10:00 Sep 10 13:00–15:00, 22:00–23:00 Sep 11 09:00–10:00, 13:00–14:00, 21:00–23:00 Sep 12 21:00–24:00 Sep 13 15:00–19:00, 22:00–24:00 Sep 14 15:00–16:00, 18:00–23:00 Sep 15 18:00–19:00 Sep 16 19:00–20:00 Sep 19 15:00–20:00 Sep 20 16:00–19:00, 21:00–24:00 Sep 21 08:00–09:00, 13:00–24:00 Sep 22 19:00–24:00 Sep 23 00:00–01:00, 12:00–15:00, 18:00–24:00 Sep 24 00:00–01:00, 11:00–14:00, 17:00–21:00 Sep 25 13:00–14:00, 17:00–24:00 Sep 26 00:00–01:00, 15:00–21:00 Sep 27 15:00–18:00, 20:00–24:00 Sep 28 00:00–02:00, 07:00–09:00, 15:00–17:00, 19:00–21:00 Sep 29 18:00–21:00, 23:00–24:00 Sep 30 00:00–01:00, 17:00–24:00
October
Oct 1 00:00–02:00, 19:00–24:00 Oct 2 00:00–01:00, 17:00–24:00 Oct 3 01:00–05:00, 20:00–24:00 Oct 4 00:00–03:00, 12:00–15:00, 17:00–19:00, 22:00–24:00 Oct 5 16:00–20:00, 22:00–24:00 Oct 6 00:00–01:00, 17:00–24:00 Oct 7 00:00–01:00, 15:00–19:00 Oct 8 18:00–24:00 Oct 9 01:00–04:00, 16:00–24:00 Oct 10 00:00–04:00, 17:00–23:00 Oct 11 00:00–02:00, 21:00–24:00 Oct 12 00:00–03:00, 19:00–22:00 Oct 13 00:00–02:00, 18:00–22:00 Oct 14 17:00–22:00 Oct 15 12:00–13:00, 19:00–21:00 Oct 16 00:00–01:00 Oct 18 00:00–03:00, 18:00–21:00 Oct 19 02:00–06:00, 21:00–24:00 Oct 20 00:00–06:00, 20:00–24:00 Oct 21 00:00–02:00 Oct 22 00:00–04:00, 18:00–21:00, 23:00–24:00 Oct 23 01:00–02:00, 23:00–24:00 Oct 24 00:00–01:00, 18:00–19:00 Oct 25 07:00–10:00 Oct 26 02:00–04:00, 14:00–17:00 Oct 27 21:00–22:00 Oct 29 12:00–14:00, 19:00–20:00 Oct 30 04:00–06:00 Oct 31 07:00–08:00, 16:00–21:00
November
Nov 1 07:00–08:00, 12:00–13:00, 15:00–19:00 Nov 2 08:00–15:00, 17:00–18:00, 21:00–23:00 Nov 3 16:00–19:00, 21:00–24:00 Nov 4 00:00–01:00, 09:00–11:00, 13:00–15:00, 19:00–20:00 Nov 5 09:00–11:00, 17:00–22:00 Nov 6 11:00–12:00, 19:00–20:00 Nov 7 00:00–01:00, 07:00–13:00, 15:00–17:00, 19:00–23:00 Nov 8 18:00–20:00 Nov 9 11:00–14:00, 19:00–20:00 Nov 10 00:00–01:00, 10:00–13:00, 15:00–17:00, 19:00–21:00 Nov 11 08:00–11:00, 19:00–20:00, 22:00–24:00 Nov 12 00:00–01:00, 12:00–13:00, 17:00–24:00 Nov 13 18:00–24:00 Nov 14 02:00–03:00, 10:00–11:00, 19:00–24:00 Nov 15 00:00–01:00, 11:00–12:00, 15:00–16:00, 19:00–23:00 Nov 16 12:00–16:00, 20:00–22:00 Nov 17 10:00–16:00, 18:00–20:00 Nov 18 01:00–03:00, 07:00–09:00, 15:00–19:00, 21:00–22:00 Nov 19 18:00–23:00 Nov 20 10:00–11:00, 17:00–22:00 Nov 21 13:00–14:00, 16:00–21:00 Nov 22 15:00–24:00 Nov 23 13:00–14:00, 18:00–19:00 Nov 24 17:00–22:00 Nov 25 02:00–04:00, 09:00–10:00, 16:00–17:00, 19:00–24:00 Nov 26 00:00–01:00, 12:00–13:00, 19:00–21:00 Nov 27 00:00–03:00, 14:00–16:00, 18:00–24:00 Nov 28 00:00–01:00, 14:00–16:00 Nov 29 00:00–02:00, 18:00–24:00 Nov 30 00:00–01:00, 12:00–13:00, 22:00–23:00
December
Dec 1 00:00–01:00, 23:00–24:00 Dec 2 00:00–01:00, 19:00–24:00 Dec 3 19:00–24:00 Dec 4 00:00–01:00, 09:00–11:00, 17:00–23:00 Dec 5 00:00–04:00, 19:00–24:00 Dec 6 00:00–02:00, 20:00–24:00 Dec 7 00:00–05:00, 19:00–24:00 Dec 8 00:00–05:00, 19:00–24:00 Dec 9 00:00–01:00, 19:00–24:00 Dec 10 00:00–03:00 Dec 11 06:00–08:00, 19:00–24:00 Dec 12 06:00–09:00, 19:00–24:00 Dec 13 00:00–01:00 Dec 14 06:00–16:00 Dec 15 06:00–09:00 Dec 17 17:00–20:00 Dec 18 00:00–02:00, 09:00–11:00 Dec 19 01:00–02:00, 18:00–19:00, 21:00–22:00 Dec 20 10:00–11:00, 19:00–21:00 Dec 21 03:00–05:00 Dec 22 01:00–08:00 Dec 23 01:00–03:00, 08:00–10:00 Dec 24 02:00–06:00, 10:00–12:00, 18:00–19:00 Dec 25 02:00–04:00 Dec 26 03:00–07:00, 13:00–14:00, 23:00–24:00 Dec 27 00:00–02:00, 13:00–15:00, 17:00–21:00 Dec 28 03:00–06:00, 14:00–16:00 Dec 29 05:00–10:00, 16:00–20:00 Dec 30 05:00–10:00, 19:00–23:00 Dec 31 04:00–06:00