Most often in August, 26 days.
Highest follower count seen that year: 1,918.
January
Jan 7 21:00–24:00 Jan 8 00:00–03:00, 23:00–24:00 Jan 9 00:00–05:00, 21:00–24:00 Jan 10 00:00–03:00 Jan 16 19:00–24:00 Jan 17 23:00–24:00 Jan 18 00:00–07:00 Jan 19 00:00–05:00, 23:00–24:00 Jan 20 00:00–01:00, 22:00–24:00 Jan 21 00:00–06:00 Jan 23 00:00–06:00 Jan 24 02:00–04:00 Jan 28 22:00–24:00 Jan 29 00:00–04:00, 22:00–24:00 Jan 30 00:00–03:00, 22:00–24:00 Jan 31 00:00–04:00, 12:00–16:00
February
Feb 10 22:00–24:00 Feb 11 00:00–05:00, 23:00–24:00 Feb 12 00:00–04:00, 20:00–23:00 Feb 13 22:00–24:00 Feb 14 00:00–04:00, 22:00–24:00 Feb 15 00:00–05:00, 22:00–24:00 Feb 16 00:00–01:00 Feb 19 00:00–03:00 Feb 21 18:00–24:00 Feb 22 00:00–02:00, 21:00–24:00 Feb 23 00:00–03:00, 19:00–23:00 Feb 24 21:00–24:00 Feb 25 00:00–04:00 Feb 27 20:00–24:00 Feb 28 00:00–03:00, 20:00–23:00
March
Mar 2 00:00–05:00, 19:00–22:00 Mar 4 21:00–24:00 Mar 5 00:00–03:00, 23:00–24:00 Mar 6 00:00–02:00, 21:00–23:00 Mar 10 22:00–24:00 Mar 11 00:00–03:00, 22:00–24:00 Mar 12 00:00–02:00, 18:00–24:00 Mar 13 19:00–20:00 Mar 14 19:00–24:00 Mar 15 00:00–02:00 Mar 28 19:00–24:00 Mar 29 00:00–02:00, 21:00–24:00 Mar 30 00:00–01:00
April
Apr 1 20:00–24:00 Apr 2 00:00–01:00, 21:00–24:00 Apr 3 00:00–01:00, 22:00–24:00 Apr 4 00:00–02:00, 19:00–24:00 Apr 5 00:00–01:00, 18:00–20:00 Apr 7 21:00–24:00 Apr 8 00:00–01:00, 20:00–24:00 Apr 9 00:00–01:00, 21:00–24:00 Apr 10 00:00–01:00, 20:00–24:00 Apr 11 00:00–01:00, 19:00–24:00 Apr 12 00:00–01:00, 19:00–24:00 Apr 14 20:00–24:00 Apr 15 21:00–23:00 Apr 22 20:00–24:00 Apr 23 00:00–01:00, 20:00–24:00 Apr 26 19:00–24:00 Apr 28 19:00–23:00 Apr 29 19:00–24:00 Apr 30 00:00–01:00, 21:00–23:00
May
May 1 18:00–24:00 May 2 00:00–01:00, 21:00–23:00 May 3 11:00–15:00 May 5 20:00–24:00 May 6 20:00–24:00 May 7 20:00–24:00 May 8 00:00–02:00, 22:00–24:00 May 9 00:00–01:00, 21:00–24:00 May 10 01:00–02:00 May 13 21:00–24:00 May 14 00:00–02:00 May 16 20:00–24:00 May 17 00:00–01:00, 22:00–24:00 May 18 00:00–01:00 May 20 20:00–24:00 May 21 00:00–01:00 May 22 21:00–22:00
June
Jun 6 20:00–24:00 Jun 7 00:00–01:00, 20:00–24:00 Jun 10 18:00–23:00 Jun 11 19:00–24:00 Jun 12 23:00–24:00 Jun 13 00:00–01:00, 21:00–23:00 Jun 14 20:00–23:00 Jun 24 20:00–24:00 Jun 25 20:00–24:00 Jun 26 20:00–21:00 Jun 28 19:00–23:00
July
Jul 3 21:00–24:00 Jul 4 00:00–01:00, 20:00–22:00 Jul 5 20:00–21:00 Jul 9 20:00–24:00 Jul 11 19:00–24:00 Jul 12 23:00–24:00 Jul 13 00:00–01:00, 17:00–21:00 Jul 14 21:00–24:00 Jul 15 21:00–24:00 Jul 16 00:00–02:00, 15:00–16:00 Jul 22 19:00–24:00 Jul 24 19:00–24:00 Jul 25 19:00–24:00 Jul 26 20:00–24:00 Jul 27 00:00–01:00 Jul 28 21:00–24:00 Jul 29 00:00–01:00, 18:00–21:00 Jul 31 19:00–24:00
August
Aug 1 21:00–24:00 Aug 2 00:00–01:00, 20:00–24:00 Aug 3 16:00–19:00 Aug 4 20:00–24:00 Aug 5 20:00–23:00 Aug 6 21:00–24:00 Aug 7 21:00–24:00 Aug 8 18:00–21:00 Aug 12 20:00–24:00 Aug 15 22:00–24:00 Aug 16 00:00–04:00, 22:00–24:00 Aug 17 00:00–03:00, 19:00–22:00 Aug 18 20:00–24:00 Aug 19 00:00–03:00, 22:00–24:00 Aug 20 00:00–03:00, 21:00–24:00 Aug 21 00:00–03:00 Aug 22 21:00–23:00 Aug 23 19:00–24:00 Aug 24 00:00–01:00 Aug 25 23:00–24:00 Aug 26 00:00–02:00 Aug 27 20:00–24:00 Aug 28 00:00–01:00, 22:00–24:00 Aug 29 00:00–02:00, 21:00–24:00 Aug 30 00:00–02:00, 22:00–24:00 Aug 31 00:00–01:00, 17:00–20:00
September
Sep 1 21:00–24:00 Sep 2 00:00–02:00 Sep 4 21:00–24:00 Sep 5 22:00–24:00 Sep 6 00:00–02:00, 21:00–23:00 Sep 7 19:00–21:00 Sep 8 20:00–24:00 Sep 9 00:00–01:00, 21:00–23:00 Sep 11 20:00–24:00 Sep 12 00:00–02:00, 21:00–24:00 Sep 13 00:00–01:00, 21:00–24:00 Sep 14 00:00–01:00 Sep 19 20:00–24:00 Sep 20 00:00–01:00, 18:00–23:00 Sep 23 18:00–24:00 Sep 24 22:00–24:00 Sep 25 00:00–01:00 Sep 29 17:00–21:00 Sep 30 20:00–24:00
October
Oct 1 23:00–24:00 Oct 2 00:00–02:00 Oct 6 21:00–24:00 Oct 7 00:00–04:00, 21:00–24:00 Oct 8 00:00–01:00, 22:00–24:00 Oct 9 00:00–02:00 Oct 15 21:00–24:00 Oct 17 00:00–03:00 Oct 18 00:00–01:00, 11:00–16:00 Oct 20 21:00–24:00 Oct 21 00:00–02:00, 22:00–24:00 Oct 22 00:00–01:00, 22:00–24:00 Oct 23 00:00–01:00 Oct 24 22:00–24:00 Oct 25 00:00–01:00
November
Nov 1 21:00–22:00 Nov 2 00:00–02:00, 13:00–17:00 Nov 4 20:00–24:00 Nov 5 00:00–01:00, 21:00–24:00 Nov 6 00:00–01:00 Nov 7 22:00–24:00 Nov 8 00:00–01:00, 21:00–23:00 Nov 9 11:00–16:00 Nov 12 20:00–24:00 Nov 13 00:00–02:00, 18:00–21:00 Nov 18 22:00–24:00 Nov 19 00:00–02:00 Nov 20 20:00–24:00 Nov 21 00:00–03:00 Nov 24 23:00–24:00 Nov 25 00:00–04:00, 22:00–24:00 Nov 26 00:00–01:00, 21:00–24:00 Nov 27 00:00–01:00, 21:00–24:00 Nov 28 00:00–03:00, 19:00–24:00
December
Dec 1 21:00–24:00 Dec 2 00:00–01:00, 21:00–24:00 Dec 3 00:00–02:00, 20:00–24:00 Dec 4 00:00–01:00, 19:00–22:00 Dec 5 23:00–24:00 Dec 6 00:00–01:00, 21:00–24:00 Dec 7 00:00–01:00 Dec 11 18:00–21:00 Dec 12 21:00–24:00 Dec 13 19:00–24:00 Dec 14 00:00–01:00, 11:00–17:00 Dec 16 21:00–23:00 Dec 19 18:00–24:00 Dec 20 11:00–18:00 Dec 21 11:00–17:00 Dec 22 17:00–19:00 Dec 23 21:00–22:00 Dec 27 22:00–24:00 Dec 28 00:00–01:00, 11:00–15:00