Most often in April, 24 days.
Highest follower count seen that year: 1,650.
January
Jan 1 18:00–20:00 Jan 2 14:00–18:00 Jan 5 17:00–20:00 Jan 7 17:00–21:00 Jan 8 16:00–19:00 Jan 10 16:00–18:00 Jan 13 18:00–20:00 Jan 14 12:00–14:00 Jan 17 12:00–15:00 Jan 22 19:00–20:00 Jan 23 00:00–04:00 Jan 26 21:00–24:00 Jan 27 16:00–20:00 Jan 28 16:00–21:00 Jan 29 17:00–21:00 Jan 30 17:00–19:00
February
Feb 1 01:00–02:00 Feb 4 16:00–21:00 Feb 5 13:00–16:00 Feb 6 17:00–19:00 Feb 7 13:00–22:00 Feb 8 03:00–04:00 Feb 10 16:00–21:00 Feb 12 17:00–20:00 Feb 13 16:00–20:00 Feb 17 13:00–15:00 Feb 19 01:00–04:00, 15:00–20:00 Feb 20 14:00–16:00 Feb 24 18:00–21:00
March
Mar 7 16:00–18:00 Mar 9 18:00–22:00 Mar 10 17:00–21:00 Mar 11 16:00–19:00 Mar 12 15:00–20:00 Mar 13 18:00–19:00 Mar 14 16:00–17:00 Mar 17 13:00–15:00, 18:00–21:00 Mar 18 21:00–23:00 Mar 19 13:00–15:00, 18:00–23:00 Mar 20 12:00–14:00, 19:00–20:00 Mar 21 14:00–19:00 Mar 22 21:00–24:00 Mar 25 15:00–19:00 Mar 26 14:00–18:00 Mar 27 11:00–20:00 Mar 28 12:00–16:00 Mar 30 15:00–18:00 Mar 31 14:00–19:00
April
Apr 1 12:00–17:00 Apr 2 14:00–19:00 Apr 3 13:00–20:00 Apr 4 15:00–20:00 Apr 5 17:00–19:00 Apr 7 12:00–20:00 Apr 8 18:00–20:00 Apr 9 13:00–18:00 Apr 10 13:00–20:00 Apr 11 13:00–20:00 Apr 12 17:00–19:00 Apr 14 14:00–20:00 Apr 15 11:00–19:00 Apr 16 15:00–17:00 Apr 17 11:00–15:00 Apr 19 01:00–05:00 Apr 21 13:00–20:00 Apr 22 13:00–20:00 Apr 23 13:00–19:00 Apr 24 01:00–03:00, 14:00–19:00 Apr 25 14:00–20:00 Apr 27 16:00–18:00 Apr 29 14:00–19:00 Apr 30 15:00–19:00
May
May 2 13:00–21:00 May 3 11:00–15:00 May 5 17:00–21:00 May 6 12:00–19:00 May 7 15:00–19:00 May 8 14:00–18:00 May 9 13:00–19:00 May 12 13:00–19:00 May 13 12:00–20:00 May 15 13:00–20:00 May 16 14:00–19:00 May 17 17:00–21:00 May 19 15:00–19:00 May 20 13:00–20:00 May 21 14:00–18:00 May 22 14:00–21:00 May 23 15:00–19:00 May 24 11:00–14:00 May 26 15:00–19:00 May 27 14:00–19:00 May 28 01:00–02:00, 14:00–19:00 May 29 14:00–19:00 May 30 15:00–19:00 May 31 12:00–15:00
June
Jun 3 18:00–21:00 Jun 5 14:00–19:00 Jun 6 15:00–19:00 Jun 9 14:00–19:00 Jun 10 13:00–18:00 Jun 11 15:00–16:00, 18:00–19:00 Jun 12 15:00–19:00 Jun 13 15:00–19:00 Jun 14 13:00–15:00, 17:00–19:00 Jun 16 13:00–20:00 Jun 17 13:00–19:00 Jun 18 16:00–19:00 Jun 19 14:00–19:00 Jun 20 15:00–19:00 Jun 24 12:00–19:00 Jun 25 18:00–19:00 Jun 26 14:00–19:00 Jun 27 15:00–17:00
July
Jul 1 16:00–20:00 Jul 2 14:00–19:00 Jul 3 15:00–19:00 Jul 4 15:00–19:00 Jul 5 12:00–15:00 Jul 7 13:00–19:00 Jul 8 14:00–19:00 Jul 9 13:00–19:00 Jul 10 15:00–19:00 Jul 11 16:00–19:00 Jul 12 13:00–15:00 Jul 14 13:00–18:00 Jul 16 16:00–20:00 Jul 17 14:00–19:00 Jul 18 14:00–19:00 Jul 21 13:00–19:00 Jul 22 14:00–19:00 Jul 23 15:00–19:00 Jul 24 15:00–19:00 Jul 25 14:00–19:00 Jul 28 13:00–19:00 Jul 30 13:00–19:00 Jul 31 14:00–19:00
August
Aug 1 14:00–19:00 Aug 4 14:00–19:00 Aug 5 15:00–19:00 Aug 6 15:00–19:00 Aug 7 16:00–20:00 Aug 9 12:00–14:00 Aug 11 14:00–19:00 Aug 13 15:00–20:00 Aug 14 15:00–19:00 Aug 15 15:00–19:00 Aug 16 11:00–15:00 Aug 19 15:00–19:00 Aug 20 14:00–19:00 Aug 21 14:00–19:00 Aug 22 15:00–17:00 Aug 23 12:00–15:00 Aug 25 14:00–19:00 Aug 26 15:00–19:00 Aug 27 15:00–19:00 Aug 28 16:00–20:00 Aug 29 15:00–19:00 Aug 30 12:00–14:00
September
Sep 1 14:00–19:00 Sep 2 14:00–18:00 Sep 3 15:00–19:00 Sep 4 15:00–19:00 Sep 5 16:00–19:00 Sep 9 14:00–18:00 Sep 19 14:00–19:00 Sep 20 14:00–16:00 Sep 22 16:00–19:00 Sep 23 16:00–20:00 Sep 29 16:00–18:00
October
Oct 6 16:00–19:00 Oct 7 16:00–19:00 Oct 8 16:00–19:00 Oct 9 17:00–19:00 Oct 11 14:00–16:00 Oct 14 15:00–19:00 Oct 15 16:00–19:00 Oct 17 18:00–19:00 Oct 20 15:00–19:00 Oct 21 15:00–19:00 Oct 22 16:00–20:00 Oct 23 16:00–19:00 Oct 24 15:00–19:00 Oct 27 16:00–19:00 Oct 28 17:00–19:00
November
Nov 4 17:00–19:00 Nov 5 15:00–19:00 Nov 6 16:00–19:00 Nov 7 16:00–18:00 Nov 11 16:00–19:00 Nov 12 17:00–19:00 Nov 13 14:00–19:00 Nov 14 15:00–20:00 Nov 18 16:00–19:00 Nov 19 16:00–18:00 Nov 20 16:00–19:00 Nov 21 18:00–19:00 Nov 28 02:00–04:00, 19:00–20:00
December
Dec 11 15:00–19:00 Dec 12 16:00–20:00 Dec 15 15:00–19:00 Dec 16 15:00–17:00 Dec 17 15:00–18:00 Dec 19 16:00–19:00