Most often in July, 25 days.
Highest follower count seen that year: 58,371.
January
Jan 7 08:00–15:00 Jan 8 08:00–15:00 Jan 10 09:00–15:00 Jan 11 08:00–13:00 Jan 12 08:00–13:00 Jan 14 08:00–14:00 Jan 15 08:00–15:00 Jan 18 08:00–15:00 Jan 19 10:00–15:00 Jan 20 08:00–14:00 Jan 21 08:00–15:00 Jan 24 08:00–10:00 Jan 25 08:00–15:00 Jan 26 08:00–15:00 Jan 27 08:00–14:00 Jan 30 08:00–14:00 Jan 31 08:00–12:00
February
Feb 1 08:00–14:00 Feb 3 08:00–15:00 Feb 6 08:00–15:00 Feb 7 08:00–14:00 Feb 8 08:00–15:00 Feb 9 08:00–14:00 Feb 10 08:00–15:00 Feb 13 09:00–14:00 Feb 14 08:00–13:00 Feb 15 08:00–14:00 Feb 16 08:00–14:00 Feb 18 02:00–08:00 Feb 19 02:00–09:00 Feb 20 02:00–08:00 Feb 21 02:00–07:00 Feb 26 02:00–09:00 Feb 27 02:00–05:00 Feb 28 02:00–08:00
March
Mar 1 04:00–08:00 Mar 2 03:00–09:00 Mar 4 02:00–09:00 Mar 5 03:00–07:00 Mar 7 02:00–07:00 Mar 8 02:00–08:00 Mar 10 02:00–08:00 Mar 11 02:00–08:00 Mar 14 02:00–08:00 Mar 17 02:00–09:00 Mar 18 02:00–07:00 Mar 20 02:00–08:00 Mar 21 02:00–09:00 Mar 23 02:00–08:00 Mar 24 02:00–09:00 Mar 25 02:00–07:00 Mar 27 02:00–09:00 Mar 29 02:00–08:00 Mar 30 05:00–11:00 Mar 31 05:00–11:00
April
Apr 3 05:00–12:00 Apr 5 05:00–10:00 Apr 6 05:00–11:00 Apr 7 05:00–10:00 Apr 9 05:00–11:00 Apr 11 05:00–11:00 Apr 13 05:00–12:00 Apr 14 05:00–11:00 Apr 16 05:00–12:00 Apr 18 05:00–12:00 Apr 19 05:00–12:00 Apr 20 07:00–10:00 Apr 21 05:00–12:00 Apr 23 05:00–11:00 Apr 24 05:00–09:00 Apr 25 05:00–11:00 Apr 26 05:00–12:00 Apr 28 05:00–12:00 Apr 29 05:00–11:00 Apr 30 06:00–10:00
May
May 1 05:00–11:00 May 5 05:00–11:00 May 6 05:00–10:00 May 7 05:00–10:00 May 8 05:00–09:00 May 9 05:00–10:00 May 10 05:00–11:00 May 11 05:00–11:00 May 12 05:00–09:00 May 13 05:00–11:00 May 14 05:00–11:00 May 15 05:00–11:00 May 29 05:00–12:00 May 30 05:00–11:00 May 31 05:00–09:00
June
Jun 1 06:00–10:00 Jun 3 05:00–10:00 Jun 4 05:00–09:00 Jun 5 07:00–08:00 Jun 9 05:00–11:00 Jun 10 05:00–08:00 Jun 12 05:00–11:00 Jun 13 06:00–11:00 Jun 14 06:00–08:00 Jun 15 05:00–12:00 Jun 17 05:00–10:00 Jun 20 05:00–11:00 Jun 21 06:00–10:00 Jun 22 06:00–11:00 Jun 23 05:00–10:00 Jun 24 05:00–10:00 Jun 25 05:00–10:00 Jun 27 05:00–11:00 Jun 29 05:00–10:00 Jun 30 05:00–11:00
July
Jul 2 05:00–11:00 Jul 3 05:00–09:00 Jul 4 05:00–11:00 Jul 5 05:00–08:00 Jul 6 06:00–10:00 Jul 7 05:00–10:00 Jul 9 05:00–11:00 Jul 10 09:00–14:00 Jul 11 09:00–14:00 Jul 12 09:00–14:00 Jul 13 09:00–12:00 Jul 14 10:00–14:00 Jul 16 09:00–14:00 Jul 17 09:00–13:00 Jul 18 09:00–13:00 Jul 19 09:00–14:00 Jul 20 10:00–14:00 Jul 21 09:00–13:00 Jul 22 09:00–13:00 Jul 23 09:00–13:00 Jul 24 09:00–13:00 Jul 25 07:00–11:00 Jul 29 05:00–10:00 Jul 30 05:00–11:00 Jul 31 05:00–11:00
August
Aug 2 05:00–11:00 Aug 3 06:00–10:00 Aug 4 06:00–10:00 Aug 6 05:00–10:00 Aug 8 05:00–10:00 Aug 9 06:00–10:00 Aug 10 06:00–11:00 Aug 12 05:00–10:00 Aug 13 05:00–10:00 Aug 14 05:00–10:00 Aug 15 05:00–10:00 Aug 17 05:00–10:00 Aug 18 05:00–10:00 Aug 19 05:00–10:00 Aug 21 05:00–10:00 Aug 22 05:00–09:00 Aug 23 05:00–10:00 Aug 24 05:00–09:00 Aug 25 05:00–10:00 Aug 27 05:00–10:00 Aug 28 05:00–10:00 Aug 29 05:00–09:00 Aug 30 05:00–09:00 Aug 31 05:00–09:00
September
Sep 1 21:00–24:00 Sep 2 00:00–01:00, 20:00–24:00 Sep 3 05:00–10:00 Sep 4 07:00–08:00 Sep 5 05:00–10:00 Sep 6 05:00–10:00 Sep 7 06:00–10:00 Sep 8 05:00–10:00 Sep 10 05:00–09:00 Sep 13 05:00–11:00 Sep 14 05:00–09:00 Sep 15 05:00–10:00 Sep 17 05:00–11:00 Sep 19 05:00–09:00, 20:00–22:00 Sep 21 05:00–10:00, 20:00–23:00 Sep 22 05:00–10:00, 22:00–24:00 Sep 23 00:00–01:00, 20:00–23:00 Sep 24 05:00–11:00 Sep 26 05:00–09:00 Sep 27 20:00–21:00 Sep 28 05:00–11:00, 20:00–22:00 Sep 29 08:00–11:00, 20:00–23:00 Sep 30 05:00–10:00, 19:00–20:00
October
Oct 3 05:00–11:00 Oct 4 05:00–09:00 Oct 5 06:00–10:00 Oct 8 07:00–10:00 Oct 9 07:00–10:00 Oct 10 05:00–09:00 Oct 15 06:00–12:00 Oct 16 06:00–12:00 Oct 17 05:00–12:00 Oct 18 05:00–12:00 Oct 19 05:00–09:00 Oct 22 06:00–12:00 Oct 23 06:00–12:00 Oct 24 06:00–09:00 Oct 25 06:00–12:00 Oct 29 05:00–10:00 Oct 30 21:00–24:00 Oct 31 00:00–02:00, 13:00–18:00
November
Nov 1 21:00–24:00 Nov 2 00:00–03:00, 14:00–18:00 Nov 5 21:00–24:00 Nov 6 00:00–03:00, 21:00–24:00 Nov 7 00:00–02:00, 21:00–24:00 Nov 8 00:00–03:00, 21:00–24:00 Nov 9 00:00–01:00, 13:00–18:00 Nov 10 21:00–24:00 Nov 11 00:00–03:00, 13:00–15:00 Nov 12 21:00–24:00 Nov 14 21:00–24:00 Nov 15 00:00–03:00, 13:00–17:00 Nov 16 20:00–24:00 Nov 17 00:00–01:00 Nov 18 21:00–24:00 Nov 19 00:00–03:00, 13:00–16:00 Nov 22 09:00–13:00, 21:00–24:00 Nov 23 00:00–03:00, 13:00–17:00 Nov 25 21:00–24:00 Nov 26 00:00–01:00, 14:00–16:00, 21:00–24:00 Nov 27 21:00–24:00 Nov 28 00:00–02:00, 17:00–18:00 Nov 29 08:00–11:00, 22:00–24:00 Nov 30 00:00–03:00, 14:00–18:00
December
Dec 2 21:00–24:00 Dec 3 00:00–04:00, 21:00–24:00 Dec 4 00:00–02:00, 21:00–24:00 Dec 5 00:00–01:00, 21:00–24:00 Dec 6 00:00–04:00, 21:00–24:00 Dec 7 00:00–02:00 Dec 9 21:00–24:00 Dec 10 00:00–02:00, 21:00–24:00 Dec 11 00:00–02:00, 21:00–24:00 Dec 13 22:00–24:00 Dec 14 00:00–04:00, 21:00–24:00 Dec 15 00:00–01:00 Dec 17 04:00–11:00 Dec 19 04:00–10:00 Dec 20 05:00–11:00 Dec 21 04:00–11:00 Dec 24 07:00–11:00 Dec 25 05:00–10:00 Dec 26 05:00–09:00 Dec 28 04:00–08:00 Dec 29 07:00–10:00 Dec 30 04:00–10:00