Most often in August, 25 days.
Highest follower count seen that year: 2,333.
January
Jan 2 09:00–18:00 Jan 3 02:00–07:00 Jan 4 10:00–24:00 Jan 5 04:00–07:00, 17:00–24:00 Jan 6 06:00–08:00 Jan 9 09:00–13:00, 15:00–24:00 Jan 10 03:00–06:00, 20:00–24:00 Jan 11 00:00–02:00, 04:00–06:00, 18:00–23:00 Jan 12 00:00–02:00, 13:00–18:00, 21:00–24:00 Jan 13 00:00–04:00 Jan 16 09:00–11:00, 13:00–20:00 Jan 17 02:00–04:00, 20:00–24:00 Jan 18 00:00–03:00, 05:00–07:00, 20:00–23:00 Jan 19 05:00–14:00, 21:00–24:00 Jan 20 00:00–01:00, 05:00–08:00
February
Feb 13 10:00–18:00, 23:00–24:00 Feb 14 00:00–02:00, 15:00–24:00 Feb 15 04:00–08:00, 20:00–24:00 Feb 16 00:00–01:00, 07:00–10:00, 20:00–24:00 Feb 17 00:00–01:00, 05:00–07:00 Feb 20 10:00–23:00 Feb 21 00:00–01:00, 05:00–08:00, 16:00–23:00 Feb 22 03:00–06:00, 20:00–24:00 Feb 23 01:00–03:00, 05:00–08:00, 18:00–23:00 Feb 24 02:00–07:00 Feb 28 09:00–22:00
March
Mar 1 01:00–05:00, 15:00–22:00 Mar 2 11:00–22:00 Mar 3 00:00–02:00, 15:00–24:00 Mar 4 01:00–03:00, 06:00–08:00 Mar 6 13:00–14:00, 17:00–24:00 Mar 7 00:00–01:00, 11:00–12:00, 14:00–24:00 Mar 8 00:00–01:00, 12:00–14:00, 16:00–21:00 Mar 9 02:00–05:00, 15:00–24:00 Mar 10 08:00–14:00, 16:00–18:00, 20:00–24:00 Mar 11 00:00–03:00, 16:00–24:00 Mar 12 03:00–08:00 Mar 15 10:00–22:00 Mar 16 13:00–20:00, 23:00–24:00 Mar 17 00:00–07:00 Mar 20 10:00–23:00 Mar 21 04:00–05:00, 07:00–08:00, 18:00–24:00 Mar 22 00:00–02:00, 09:00–13:00 Mar 23 06:00–10:00, 17:00–23:00 Mar 24 03:00–09:00 Mar 27 09:00–21:00 Mar 28 03:00–06:00, 15:00–22:00 Mar 29 01:00–05:00, 15:00–22:00 Mar 30 04:00–07:00, 15:00–20:00 Mar 31 00:00–07:00
April
Apr 3 08:00–23:00 Apr 4 02:00–06:00, 15:00–24:00 Apr 5 00:00–04:00, 15:00–20:00 Apr 6 08:00–09:00, 12:00–17:00 Apr 7 00:00–01:00 Apr 10 09:00–21:00 Apr 11 00:00–03:00, 12:00–24:00 Apr 12 13:00–23:00 Apr 13 01:00–04:00, 07:00–09:00, 16:00–18:00, 20:00–24:00 Apr 14 00:00–01:00, 06:00–09:00 Apr 17 08:00–17:00, 19:00–24:00 Apr 18 00:00–01:00, 14:00–24:00 Apr 19 12:00–13:00 Apr 20 19:00–23:00 Apr 21 00:00–06:00 Apr 24 08:00–13:00, 15:00–21:00 Apr 25 03:00–07:00, 16:00–24:00 Apr 26 00:00–01:00, 19:00–22:00 Apr 27 03:00–07:00, 19:00–24:00 Apr 28 00:00–01:00, 06:00–08:00
May
May 1 12:00–20:00 May 2 10:00–19:00, 22:00–24:00 May 3 15:00–23:00 May 4 12:00–14:00, 16:00–23:00 May 5 04:00–08:00 May 8 11:00–17:00 May 9 00:00–07:00, 20:00–24:00 May 10 00:00–01:00, 03:00–05:00, 16:00–20:00, 23:00–24:00 May 11 00:00–04:00, 06:00–08:00 May 15 10:00–18:00, 21:00–22:00 May 16 06:00–12:00, 17:00–18:00 May 17 00:00–03:00, 12:00–24:00 May 18 00:00–01:00, 03:00–05:00, 11:00–24:00 May 19 04:00–07:00 May 23 17:00–21:00 May 24 00:00–04:00, 10:00–14:00, 16:00–19:00 May 25 07:00–12:00, 14:00–20:00 May 26 07:00–14:00, 21:00–24:00 May 27 00:00–01:00, 04:00–06:00 May 29 08:00–17:00 May 30 04:00–07:00, 17:00–23:00 May 31 02:00–05:00, 08:00–18:00
June
Jun 1 00:00–09:00, 13:00–24:00 Jun 2 00:00–01:00, 03:00–07:00 Jun 5 09:00–19:00 Jun 6 04:00–15:00 Jun 7 09:00–19:00 Jun 8 01:00–04:00, 10:00–24:00 Jun 9 00:00–01:00, 03:00–08:00 Jun 12 09:00–13:00, 15:00–23:00 Jun 13 07:00–17:00 Jun 14 04:00–11:00, 13:00–16:00 Jun 15 04:00–12:00 Jun 16 00:00–02:00, 05:00–09:00 Jun 19 12:00–15:00, 22:00–24:00 Jun 20 00:00–03:00, 08:00–16:00 Jun 21 03:00–07:00, 15:00–21:00 Jun 22 03:00–06:00, 14:00–21:00 Jun 23 00:00–09:00 Jun 26 11:00–12:00, 15:00–17:00 Jun 27 06:00–11:00, 23:00–24:00 Jun 28 00:00–02:00, 08:00–09:00, 16:00–21:00 Jun 29 01:00–06:00, 16:00–22:00 Jun 30 00:00–06:00
July
Jul 3 22:00–24:00 Jul 4 03:00–09:00, 20:00–24:00 Jul 5 03:00–07:00, 12:00–21:00 Jul 6 11:00–16:00 Jul 7 04:00–08:00 Jul 10 08:00–17:00 Jul 11 01:00–08:00, 22:00–24:00 Jul 12 02:00–09:00, 20:00–24:00 Jul 13 02:00–07:00, 15:00–24:00 Jul 14 04:00–07:00 Jul 31 09:00–13:00, 16:00–22:00
August
Aug 1 01:00–08:00, 17:00–21:00 Aug 2 01:00–06:00, 15:00–21:00 Aug 3 03:00–09:00, 17:00–24:00 Aug 4 00:00–09:00, 18:00–24:00 Aug 5 06:00–07:00, 14:00–20:00 Aug 6 00:00–07:00, 16:00–21:00, 23:00–24:00 Aug 7 00:00–01:00, 09:00–23:00 Aug 8 06:00–22:00 Aug 9 07:00–21:00 Aug 10 05:00–14:00, 18:00–22:00 Aug 11 06:00–09:00 Aug 14 07:00–14:00, 17:00–23:00 Aug 15 06:00–14:00, 19:00–24:00 Aug 16 01:00–07:00, 13:00–21:00 Aug 17 06:00–18:00 Aug 18 03:00–08:00 Aug 21 11:00–18:00 Aug 22 04:00–13:00 Aug 23 01:00–12:00, 23:00–24:00 Aug 24 00:00–11:00 Aug 25 04:00–10:00 Aug 28 11:00–18:00 Aug 29 03:00–07:00, 15:00–19:00 Aug 30 03:00–07:00, 15:00–21:00 Aug 31 03:00–15:00
September
Sep 3 10:00–19:00 Sep 4 05:00–11:00 Sep 5 05:00–11:00 Sep 6 00:00–03:00, 05:00–11:00 Sep 7 06:00–14:00 Sep 8 00:00–09:00 Sep 11 08:00–13:00 Sep 12 09:00–18:00 Sep 13 04:00–06:00, 08:00–12:00, 17:00–22:00 Sep 14 05:00–14:00 Sep 15 04:00–09:00 Sep 18 17:00–24:00 Sep 19 09:00–13:00 Sep 20 08:00–17:00 Sep 21 06:00–11:00, 22:00–24:00 Sep 22 00:00–01:00, 03:00–09:00 Sep 25 09:00–14:00 Sep 26 05:00–11:00, 16:00–22:00 Sep 27 09:00–19:00 Sep 28 06:00–16:00 Sep 29 03:00–09:00
October
Oct 3 14:00–18:00 Oct 4 05:00–08:00, 10:00–12:00, 16:00–20:00 Oct 5 06:00–09:00, 13:00–16:00 Oct 6 04:00–09:00 Oct 9 15:00–22:00 Oct 10 06:00–15:00 Oct 11 00:00–10:00, 17:00–23:00 Oct 12 06:00–14:00, 20:00–24:00 Oct 13 00:00–09:00 Oct 16 16:00–21:00 Oct 17 07:00–13:00, 23:00–24:00 Oct 18 00:00–04:00, 10:00–17:00 Oct 19 06:00–14:00, 21:00–24:00 Oct 20 00:00–01:00, 04:00–08:00 Oct 23 17:00–22:00 Oct 24 10:00–13:00, 16:00–19:00 Oct 25 04:00–15:00, 20:00–24:00 Oct 26 00:00–01:00, 05:00–11:00, 14:00–16:00 Oct 27 06:00–13:00 Oct 30 13:00–20:00 Oct 31 06:00–12:00
November
Nov 1 05:00–24:00 Nov 2 09:00–24:00 Nov 3 06:00–10:00 Nov 6 15:00–16:00, 19:00–22:00 Nov 7 07:00–20:00 Nov 8 06:00–18:00 Nov 9 07:00–16:00 Nov 10 05:00–11:00 Nov 13 15:00–19:00, 21:00–24:00 Nov 14 00:00–01:00, 07:00–13:00, 21:00–23:00 Nov 15 00:00–01:00, 08:00–15:00, 22:00–24:00 Nov 16 05:00–10:00, 18:00–22:00 Nov 17 00:00–10:00 Nov 20 23:00–24:00 Nov 21 00:00–02:00, 08:00–12:00, 14:00–18:00 Nov 22 00:00–03:00, 05:00–11:00, 18:00–20:00 Nov 23 05:00–14:00, 20:00–24:00 Nov 24 04:00–10:00 Nov 27 20:00–24:00 Nov 28 05:00–08:00, 16:00–19:00 Nov 29 03:00–13:00, 19:00–24:00 Nov 30 00:00–01:00, 06:00–14:00, 17:00–24:00
December
Dec 1 06:00–10:00 Dec 4 10:00–17:00, 20:00–24:00 Dec 5 00:00–01:00, 04:00–08:00, 17:00–22:00 Dec 6 07:00–16:00, 20:00–24:00 Dec 7 00:00–02:00, 09:00–12:00, 17:00–23:00 Dec 8 02:00–10:00 Dec 11 11:00–18:00 Dec 12 03:00–09:00, 13:00–21:00 Dec 13 05:00–11:00 Dec 14 04:00–13:00, 19:00–24:00 Dec 18 15:00–19:00 Dec 19 00:00–06:00, 13:00–21:00 Dec 20 01:00–03:00, 12:00–19:00 Dec 21 01:00–08:00, 17:00–21:00, 23:00–24:00 Dec 22 00:00–01:00, 04:00–09:00 Dec 23 21:00–24:00 Dec 24 00:00–01:00, 07:00–11:00, 17:00–20:00 Dec 25 01:00–08:00, 21:00–24:00 Dec 26 04:00–07:00 Dec 27 01:00–03:00, 08:00–10:00, 23:00–24:00 Dec 28 00:00–02:00, 08:00–13:00 Dec 29 00:00–05:00, 07:00–09:00 Dec 31 00:00–09:00, 21:00–24:00