Most often in March, 31 days.
Highest follower count seen that year: 2,598.
January
Jan 2 01:00–03:00, 13:00–14:00 Jan 31 01:00–02:00, 08:00–11:00, 23:00–24:00
February
Feb 1 01:00–02:00, 15:00–16:00 Feb 2 01:00–02:00, 05:00–10:00 Feb 3 11:00–14:00 Feb 4 08:00–11:00 Feb 5 10:00–12:00 Feb 6 07:00–14:00 Feb 7 03:00–04:00 Feb 8 00:00–04:00, 14:00–16:00 Feb 9 00:00–01:00, 07:00–11:00 Feb 10 05:00–06:00, 09:00–13:00 Feb 11 09:00–11:00 Feb 12 06:00–08:00, 10:00–12:00 Feb 13 07:00–08:00, 11:00–12:00, 14:00–15:00 Feb 14 01:00–03:00, 09:00–10:00, 12:00–14:00 Feb 15 06:00–08:00, 10:00–11:00, 15:00–16:00 Feb 16 00:00–01:00 Feb 19 12:00–13:00 Feb 20 05:00–07:00 Feb 21 00:00–01:00, 03:00–07:00, 23:00–24:00 Feb 22 03:00–04:00, 07:00–08:00 Feb 23 00:00–01:00, 08:00–10:00 Feb 25 12:00–13:00 Feb 26 12:00–13:00 Feb 27 07:00–08:00, 11:00–13:00, 15:00–16:00 Feb 28 00:00–01:00, 11:00–12:00
March
Mar 1 01:00–04:00, 12:00–15:00, 23:00–24:00 Mar 2 06:00–10:00 Mar 3 12:00–13:00 Mar 4 11:00–13:00 Mar 5 12:00–13:00 Mar 6 11:00–15:00 Mar 7 00:00–02:00, 05:00–06:00, 14:00–16:00 Mar 8 08:00–15:00, 22:00–24:00 Mar 9 05:00–06:00, 09:00–10:00 Mar 10 11:00–12:00 Mar 11 11:00–13:00 Mar 12 06:00–08:00, 10:00–12:00 Mar 13 14:00–15:00, 23:00–24:00 Mar 14 00:00–03:00, 07:00–08:00, 11:00–12:00, 23:00–24:00 Mar 15 01:00–02:00, 08:00–09:00, 13:00–15:00 Mar 16 00:00–02:00, 04:00–05:00, 09:00–10:00 Mar 17 12:00–13:00 Mar 18 10:00–11:00 Mar 19 11:00–12:00 Mar 20 12:00–14:00, 22:00–23:00 Mar 21 03:00–06:00 Mar 22 06:00–08:00 Mar 23 02:00–04:00, 07:00–11:00 Mar 24 05:00–07:00 Mar 25 10:00–11:00 Mar 26 07:00–11:00 Mar 27 07:00–08:00, 10:00–11:00 Mar 28 00:00–05:00, 16:00–17:00 Mar 29 00:00–04:00, 10:00–12:00, 23:00–24:00 Mar 30 00:00–01:00, 08:00–10:00 Mar 31 06:00–07:00, 09:00–11:00
April
Apr 1 08:00–10:00 Apr 2 06:00–07:00, 11:00–15:00, 22:00–24:00 Apr 3 01:00–02:00 Apr 4 23:00–24:00 Apr 5 00:00–02:00, 12:00–14:00 Apr 6 01:00–05:00, 12:00–13:00 Apr 7 07:00–12:00 Apr 8 09:00–11:00 Apr 9 08:00–12:00 Apr 10 07:00–08:00, 10:00–12:00 Apr 11 05:00–07:00, 23:00–24:00 Apr 12 00:00–02:00, 13:00–15:00, 23:00–24:00 Apr 13 05:00–06:00, 10:00–12:00 Apr 14 07:00–08:00, 10:00–13:00 Apr 15 08:00–12:00 Apr 16 08:00–12:00 Apr 18 01:00–02:00, 05:00–07:00 Apr 20 00:00–02:00, 11:00–12:00 Apr 21 10:00–12:00, 20:00–21:00 Apr 24 15:00–16:00, 23:00–24:00 Apr 25 00:00–01:00 Apr 26 01:00–05:00 Apr 27 03:00–04:00, 09:00–11:00 Apr 28 10:00–11:00 Apr 29 11:00–12:00 Apr 30 11:00–13:00
May
May 2 02:00–04:00 May 4 05:00–07:00 May 5 11:00–12:00 May 6 09:00–11:00 May 8 07:00–09:00, 12:00–13:00 May 10 06:00–11:00 May 11 00:00–03:00, 05:00–07:00, 09:00–11:00 May 12 10:00–13:00 May 13 08:00–12:00 May 14 08:00–13:00 May 15 08:00–09:00, 12:00–15:00 May 16 03:00–05:00 May 17 01:00–02:00 May 18 01:00–03:00, 05:00–06:00, 11:00–12:00 May 19 10:00–12:00 May 20 08:00–09:00, 11:00–13:00 May 21 07:00–11:00 May 22 07:00–12:00 May 23 03:00–04:00 May 24 01:00–02:00, 10:00–12:00 May 25 00:00–02:00, 09:00–11:00 May 26 07:00–12:00 May 27 08:00–09:00, 12:00–13:00 May 30 01:00–03:00, 07:00–08:00 May 31 05:00–07:00, 10:00–11:00
June
Jun 1 10:00–12:00 Jun 2 08:00–13:00 Jun 3 02:00–03:00, 06:00–08:00, 12:00–14:00 Jun 4 02:00–05:00, 12:00–13:00 Jun 5 02:00–03:00, 12:00–14:00 Jun 6 03:00–06:00 Jun 7 05:00–06:00, 11:00–13:00 Jun 8 02:00–04:00 Jun 9 10:00–11:00 Jun 10 09:00–11:00 Jun 11 14:00–15:00 Jun 12 01:00–03:00 Jun 13 07:00–08:00, 16:00–17:00 Jun 15 02:00–03:00, 10:00–12:00 Jun 16 01:00–03:00 Jun 18 00:00–01:00, 11:00–12:00 Jun 19 00:00–02:00, 12:00–13:00 Jun 20 07:00–08:00 Jun 21 13:00–15:00 Jun 22 02:00–05:00 Jun 23 11:00–12:00 Jun 24 07:00–08:00 Jun 25 12:00–13:00 Jun 26 03:00–05:00 Jun 27 22:00–23:00 Jun 29 00:00–02:00, 10:00–11:00
July
Jul 1 13:00–14:00, 22:00–24:00 Jul 2 18:00–19:00 Jul 3 00:00–01:00 Jul 4 04:00–05:00, 21:00–22:00 Jul 5 11:00–14:00, 23:00–24:00 Jul 6 21:00–24:00 Jul 7 02:00–03:00, 21:00–22:00 Jul 8 05:00–06:00 Jul 9 03:00–05:00 Jul 12 08:00–11:00, 23:00–24:00 Jul 13 00:00–01:00 Jul 14 00:00–02:00 Jul 15 00:00–02:00, 08:00–09:00, 12:00–15:00 Jul 16 03:00–04:00, 07:00–08:00, 13:00–14:00 Jul 17 02:00–03:00, 06:00–10:00 Jul 18 05:00–06:00, 14:00–16:00 Jul 19 10:00–11:00, 16:00–17:00 Jul 20 06:00–08:00 Jul 21 03:00–04:00, 14:00–16:00 Jul 22 00:00–03:00, 08:00–09:00, 12:00–13:00 Jul 23 03:00–04:00, 12:00–16:00 Jul 24 04:00–08:00, 10:00–11:00 Jul 25 03:00–05:00, 10:00–14:00 Jul 26 02:00–04:00, 11:00–13:00, 14:00–15:00 Jul 27 01:00–07:00