Most often in March, 29 days.
Highest follower count seen that year: 1,499.
January
Jan 12 04:00–07:00 Jan 13 04:00–06:00 Jan 14 05:00–07:00, 16:00–17:00 Jan 15 01:00–02:00, 04:00–06:00, 18:00–22:00 Jan 16 02:00–06:00, 23:00–24:00 Jan 17 00:00–01:00, 23:00–24:00
February
Feb 1 05:00–07:00 Feb 2 04:00–07:00 Feb 3 21:00–22:00 Feb 4 05:00–08:00, 16:00–18:00, 21:00–22:00 Feb 5 05:00–06:00, 17:00–18:00, 21:00–24:00 Feb 6 04:00–06:00, 16:00–24:00 Feb 8 17:00–18:00 Feb 9 01:00–05:00 Feb 10 15:00–22:00 Feb 11 03:00–05:00 Feb 12 02:00–05:00, 21:00–22:00 Feb 13 04:00–06:00, 22:00–23:00 Feb 14 03:00–06:00, 16:00–18:00 Feb 15 00:00–08:00, 16:00–18:00 Feb 16 02:00–04:00, 06:00–08:00 Feb 17 03:00–05:00, 15:00–17:00, 20:00–24:00 Feb 18 00:00–02:00, 04:00–05:00, 10:00–12:00, 21:00–23:00 Feb 19 01:00–02:00, 04:00–06:00, 21:00–24:00 Feb 20 05:00–06:00, 21:00–22:00 Feb 21 01:00–05:00, 22:00–23:00 Feb 22 00:00–06:00 Feb 26 05:00–06:00, 22:00–23:00 Feb 27 00:00–02:00, 05:00–07:00, 22:00–24:00 Feb 28 04:00–07:00, 17:00–18:00
March
Mar 1 02:00–06:00, 16:00–19:00, 21:00–24:00 Mar 2 00:00–01:00, 03:00–07:00 Mar 3 02:00–07:00 Mar 4 04:00–06:00, 20:00–24:00 Mar 5 06:00–07:00, 17:00–19:00, 21:00–23:00 Mar 6 04:00–06:00, 15:00–16:00, 21:00–23:00 Mar 7 00:00–06:00, 20:00–24:00 Mar 8 00:00–01:00, 04:00–06:00, 20:00–21:00, 23:00–24:00 Mar 9 04:00–06:00, 21:00–24:00 Mar 10 00:00–02:00, 04:00–06:00, 21:00–24:00 Mar 11 00:00–01:00, 03:00–07:00, 18:00–19:00, 22:00–24:00 Mar 12 00:00–01:00, 04:00–06:00, 17:00–18:00, 21:00–23:00 Mar 13 04:00–05:00, 17:00–19:00, 21:00–22:00 Mar 14 00:00–06:00, 13:00–15:00, 19:00–24:00 Mar 15 00:00–02:00, 04:00–06:00, 14:00–18:00, 22:00–23:00 Mar 16 03:00–04:00, 06:00–07:00, 22:00–23:00 Mar 17 02:00–03:00, 14:00–15:00, 21:00–24:00 Mar 19 04:00–06:00 Mar 20 04:00–05:00, 21:00–24:00 Mar 21 00:00–01:00, 15:00–19:00, 22:00–24:00 Mar 22 04:00–05:00 Mar 23 04:00–05:00, 21:00–23:00 Mar 25 04:00–06:00, 17:00–19:00, 21:00–24:00 Mar 26 01:00–02:00 Mar 27 17:00–19:00, 22:00–24:00 Mar 28 00:00–01:00, 04:00–05:00, 14:00–24:00 Mar 29 00:00–01:00, 04:00–05:00, 22:00–24:00 Mar 30 04:00–06:00 Mar 31 03:00–06:00, 21:00–24:00
April
Apr 1 05:00–06:00, 16:00–18:00, 21:00–24:00 Apr 2 00:00–01:00, 05:00–06:00, 17:00–18:00, 22:00–24:00 Apr 3 12:00–16:00, 19:00–23:00 Apr 4 00:00–01:00, 04:00–05:00, 15:00–18:00, 21:00–23:00 Apr 5 04:00–05:00, 15:00–16:00 Apr 7 15:00–17:00, 19:00–24:00 Apr 8 00:00–01:00, 04:00–05:00, 15:00–18:00, 20:00–23:00 Apr 9 01:00–03:00, 15:00–18:00 Apr 10 04:00–05:00, 14:00–17:00, 20:00–21:00 Apr 11 05:00–06:00, 16:00–18:00, 21:00–24:00 Apr 12 04:00–05:00, 16:00–17:00, 22:00–24:00 Apr 13 03:00–05:00, 21:00–22:00 Apr 14 12:00–14:00, 20:00–23:00 Apr 15 04:00–05:00, 14:00–15:00, 20:00–24:00 Apr 16 04:00–05:00, 15:00–17:00, 21:00–24:00 Apr 21 13:00–17:00, 20:00–24:00 Apr 22 00:00–02:00, 14:00–18:00, 20:00–24:00 Apr 23 14:00–18:00 Apr 24 00:00–01:00, 14:00–18:00, 22:00–24:00 Apr 25 14:00–19:00, 21:00–23:00 Apr 26 04:00–05:00 Apr 29 01:00–02:00, 05:00–06:00, 16:00–17:00, 22:00–24:00 Apr 30 21:00–24:00
May
May 1 12:00–14:00, 20:00–24:00 May 2 10:00–15:00, 19:00–21:00 May 3 21:00–23:00 May 5 09:00–14:00, 16:00–18:00, 21:00–24:00 May 6 09:00–11:00, 17:00–18:00 May 7 01:00–02:00, 04:00–05:00, 10:00–16:00, 23:00–24:00 May 8 11:00–13:00, 21:00–24:00 May 9 10:00–17:00, 21:00–22:00 May 10 20:00–21:00 May 12 10:00–14:00, 16:00–17:00 May 13 10:00–17:00, 21:00–22:00 May 14 03:00–04:00, 09:00–12:00, 14:00–16:00, 21:00–24:00 May 15 12:00–14:00 May 16 03:00–05:00, 10:00–13:00, 18:00–19:00, 21:00–23:00 May 17 00:00–01:00, 04:00–06:00, 17:00–19:00, 21:00–24:00 May 19 10:00–18:00, 22:00–23:00 May 20 00:00–01:00, 03:00–04:00, 09:00–17:00, 23:00–24:00 May 21 00:00–01:00, 11:00–12:00, 16:00–19:00, 22:00–24:00 May 22 10:00–15:00, 22:00–24:00 May 23 04:00–05:00, 21:00–24:00 May 25 01:00–02:00, 21:00–22:00 May 26 11:00–14:00, 20:00–23:00 May 27 03:00–04:00, 10:00–11:00, 13:00–14:00, 16:00–17:00, 20:00–22:00 May 28 17:00–19:00, 21:00–24:00 May 29 11:00–14:00, 23:00–24:00 May 30 00:00–01:00, 09:00–11:00, 13:00–18:00, 22:00–23:00 May 31 02:00–07:00, 16:00–22:00
June
Jun 1 01:00–02:00, 05:00–06:00, 12:00–15:00 Jun 2 11:00–14:00 Jun 3 03:00–04:00, 10:00–18:00, 20:00–22:00 Jun 4 02:00–05:00, 11:00–17:00, 19:00–24:00 Jun 5 00:00–01:00, 10:00–13:00 Jun 6 01:00–06:00, 16:00–18:00, 21:00–22:00 Jun 13 01:00–05:00, 07:00–08:00 Jun 15 02:00–05:00, 07:00–08:00 Jun 17 03:00–04:00, 21:00–22:00 Jun 26 02:00–03:00 Jun 27 21:00–22:00 Jun 30 20:00–21:00
July
Jul 20 14:00–15:00, 23:00–24:00 Jul 23 03:00–04:00 Jul 24 10:00–11:00 Jul 28 10:00–11:00 Jul 29 11:00–12:00
August
Aug 13 19:00–21:00 Aug 14 03:00–06:00, 13:00–17:00, 20:00–23:00 Aug 15 01:00–03:00, 13:00–18:00, 22:00–23:00 Aug 16 03:00–05:00, 17:00–24:00 Aug 17 03:00–05:00, 17:00–24:00 Aug 18 00:00–04:00, 12:00–24:00 Aug 19 00:00–04:00, 14:00–16:00, 21:00–24:00 Aug 20 01:00–06:00, 13:00–24:00 Aug 21 00:00–02:00, 16:00–17:00, 20:00–22:00 Aug 22 01:00–03:00, 11:00–15:00, 17:00–19:00, 22:00–23:00 Aug 23 03:00–05:00, 12:00–15:00 Aug 24 21:00–23:00 Aug 25 21:00–23:00 Aug 26 16:00–17:00, 20:00–21:00, 23:00–24:00 Aug 27 01:00–06:00, 14:00–17:00, 19:00–23:00 Aug 28 01:00–03:00, 21:00–24:00 Aug 29 16:00–17:00, 21:00–22:00 Aug 30 18:00–19:00
September
Sep 1 14:00–17:00, 20:00–22:00 Sep 2 00:00–01:00 Sep 3 04:00–05:00, 13:00–15:00 Sep 4 21:00–24:00 Sep 5 00:00–01:00, 17:00–18:00, 20:00–24:00 Sep 6 00:00–02:00, 05:00–06:00 Sep 8 21:00–22:00 Sep 9 17:00–19:00, 21:00–24:00 Sep 10 00:00–02:00, 20:00–23:00 Sep 11 00:00–03:00, 14:00–18:00, 20:00–24:00 Sep 12 00:00–02:00, 04:00–05:00, 12:00–17:00, 19:00–22:00 Sep 13 01:00–03:00, 05:00–07:00, 15:00–18:00, 20:00–22:00 Sep 14 04:00–06:00, 20:00–24:00 Sep 15 12:00–14:00, 17:00–19:00, 21:00–23:00 Sep 16 01:00–04:00, 14:00–15:00, 18:00–22:00 Sep 17 03:00–06:00 Sep 18 21:00–24:00 Sep 19 00:00–01:00, 03:00–06:00, 11:00–12:00, 14:00–16:00, 21:00–24:00 Sep 20 16:00–17:00, 23:00–24:00 Sep 21 00:00–05:00, 18:00–19:00 Sep 23 00:00–02:00 Sep 25 17:00–18:00 Sep 27 02:00–05:00 Sep 28 06:00–07:00, 18:00–22:00 Sep 29 12:00–16:00, 22:00–24:00
October
Oct 2 22:00–24:00 Oct 3 04:00–05:00, 18:00–19:00, 21:00–22:00 Oct 4 02:00–05:00, 20:00–21:00 Oct 5 03:00–06:00, 08:00–10:00, 16:00–17:00, 21:00–23:00 Oct 6 00:00–01:00, 12:00–14:00, 21:00–24:00 Oct 7 04:00–06:00, 16:00–18:00, 20:00–22:00 Oct 8 02:00–04:00, 21:00–24:00 Oct 9 00:00–04:00, 20:00–24:00 Oct 10 05:00–06:00, 15:00–17:00 Oct 11 03:00–05:00, 22:00–24:00 Oct 12 00:00–01:00, 21:00–24:00 Oct 13 10:00–16:00, 21:00–23:00 Oct 14 04:00–05:00, 10:00–14:00, 20:00–22:00 Oct 15 13:00–15:00 Oct 16 04:00–05:00 Oct 17 02:00–04:00, 10:00–15:00, 20:00–21:00 Oct 18 04:00–05:00 Oct 19 02:00–06:00, 11:00–14:00, 22:00–23:00 Oct 20 10:00–12:00, 14:00–15:00, 17:00–19:00 Oct 21 02:00–05:00, 21:00–23:00 Oct 22 02:00–07:00, 20:00–23:00 Oct 23 04:00–06:00, 15:00–17:00, 21:00–23:00 Oct 24 04:00–05:00, 15:00–18:00, 20:00–22:00 Oct 25 01:00–02:00, 04:00–06:00, 18:00–19:00 Oct 26 01:00–05:00, 16:00–20:00, 23:00–24:00 Oct 27 00:00–01:00, 10:00–13:00 Oct 28 10:00–13:00, 15:00–18:00 Oct 29 01:00–06:00, 20:00–23:00 Oct 30 02:00–03:00
November
Nov 15 20:00–23:00 Nov 16 01:00–05:00 Nov 17 13:00–17:00, 19:00–21:00 Nov 18 02:00–04:00 Nov 19 02:00–05:00, 13:00–17:00, 19:00–22:00 Nov 20 01:00–03:00, 05:00–06:00, 18:00–22:00 Nov 21 01:00–05:00, 14:00–16:00 Nov 22 04:00–06:00, 22:00–24:00 Nov 23 00:00–01:00, 04:00–05:00 Nov 24 11:00–13:00, 20:00–22:00 Nov 25 02:00–05:00, 13:00–14:00, 20:00–21:00 Nov 26 01:00–06:00, 11:00–15:00 Nov 27 02:00–04:00, 14:00–15:00 Nov 28 02:00–05:00, 13:00–18:00 Nov 29 03:00–07:00 Nov 30 00:00–01:00
December
Dec 2 01:00–05:00 Dec 3 02:00–03:00, 05:00–06:00, 11:00–12:00 Dec 4 00:00–04:00, 15:00–17:00 Dec 5 00:00–05:00 Dec 6 01:00–02:00, 05:00–06:00, 20:00–23:00 Dec 7 04:00–05:00 Dec 8 05:00–08:00, 12:00–14:00, 17:00–24:00 Dec 9 01:00–05:00, 13:00–15:00, 21:00–23:00 Dec 10 05:00–06:00, 12:00–14:00, 16:00–18:00, 21:00–24:00 Dec 11 05:00–06:00, 22:00–23:00 Dec 12 11:00–17:00, 19:00–22:00 Dec 13 00:00–04:00, 14:00–22:00 Dec 14 02:00–05:00, 16:00–19:00, 21:00–24:00 Dec 15 00:00–01:00, 03:00–04:00, 10:00–14:00, 20:00–23:00 Dec 16 02:00–04:00, 13:00–14:00, 16:00–17:00, 21:00–24:00 Dec 17 05:00–06:00, 20:00–22:00 Dec 18 02:00–04:00, 11:00–14:00, 22:00–24:00 Dec 19 00:00–01:00, 03:00–06:00, 12:00–15:00 Dec 20 03:00–06:00, 22:00–23:00 Dec 21 00:00–01:00, 03:00–05:00, 15:00–17:00, 19:00–22:00