Most often in March, 29 days.
Highest follower count seen that year: 1,351.
February
Feb 24 06:00–11:00 Feb 25 03:00–09:00 Feb 26 04:00–10:00 Feb 27 03:00–10:00 Feb 28 03:00–09:00
March
Mar 1 03:00–10:00 Mar 2 03:00–10:00 Mar 3 03:00–05:00, 07:00–10:00 Mar 4 03:00–10:00 Mar 5 03:00–09:00 Mar 6 04:00–10:00 Mar 7 03:00–04:00, 06:00–10:00 Mar 8 03:00–09:00 Mar 9 05:00–10:00 Mar 11 03:00–09:00 Mar 12 03:00–10:00 Mar 13 04:00–11:00 Mar 14 03:00–10:00 Mar 15 04:00–10:00 Mar 16 02:00–11:00 Mar 18 04:00–10:00 Mar 19 03:00–10:00 Mar 20 05:00–10:00 Mar 21 03:00–10:00 Mar 22 03:00–11:00 Mar 23 03:00–11:00 Mar 24 03:00–10:00 Mar 25 03:00–09:00 Mar 26 03:00–09:00 Mar 27 03:00–10:00 Mar 28 04:00–09:00 Mar 29 04:00–10:00 Mar 30 05:00–10:00 Mar 31 03:00–10:00
April
Apr 1 05:00–09:00 Apr 2 04:00–10:00 Apr 3 03:00–10:00 Apr 4 03:00–10:00 Apr 5 04:00–10:00 Apr 6 03:00–10:00 Apr 7 03:00–10:00 Apr 8 03:00–10:00 Apr 9 03:00–09:00 Apr 10 03:00–10:00 Apr 12 04:00–10:00 Apr 14 04:00–10:00 Apr 15 05:00–10:00 Apr 16 03:00–10:00 Apr 18 04:00–10:00 Apr 19 05:00–10:00 Apr 20 03:00–10:00 Apr 21 04:00–10:00 Apr 22 03:00–10:00 Apr 23 04:00–10:00 Apr 24 05:00–10:00 Apr 25 03:00–09:00 Apr 26 04:00–10:00 Apr 27 04:00–10:00 Apr 28 04:00–11:00 Apr 29 04:00–10:00 Apr 30 04:00–11:00
May
May 1 05:00–10:00 May 2 03:00–07:00 May 3 06:00–12:00 May 5 05:00–11:00 May 6 04:00–11:00 May 7 04:00–10:00 May 8 05:00–10:00 May 9 03:00–10:00 May 10 04:00–09:00 May 11 02:00–09:00 May 12 04:00–10:00 May 13 04:00–10:00 May 14 03:00–11:00 May 15 04:00–10:00 May 16 04:00–10:00 May 17 05:00–09:00 May 18 04:00–11:00 May 19 03:00–09:00 May 20 03:00–09:00 May 21 04:00–10:00 May 22 04:00–10:00 May 24 03:00–09:00 May 25 03:00–10:00 May 26 04:00–10:00 May 27 04:00–10:00 May 28 04:00–10:00 May 29 04:00–10:00 May 30 04:00–10:00 May 31 04:00–10:00
June
Jun 1 04:00–10:00 Jun 3 04:00–10:00 Jun 4 04:00–11:00 Jun 5 04:00–10:00 Jun 6 05:00–10:00 Jun 7 05:00–11:00 Jun 8 04:00–10:00 Jun 10 04:00–11:00 Jun 11 04:00–11:00 Jun 12 05:00–10:00 Jun 13 04:00–12:00 Jun 15 03:00–10:00 Jun 17 04:00–10:00 Jun 18 04:00–10:00 Jun 19 03:00–07:00 Jun 20 04:00–11:00 Jun 21 03:00–09:00 Jun 23 05:00–10:00 Jun 24 03:00–10:00 Jun 25 04:00–10:00 Jun 26 03:00–09:00 Jun 27 04:00–09:00 Jun 28 04:00–08:00 Jun 29 03:00–10:00 Jun 30 04:00–10:00
July
Jul 1 03:00–05:00, 07:00–10:00 Jul 2 03:00–10:00 Jul 3 04:00–10:00 Jul 4 04:00–10:00 Jul 5 05:00–11:00 Jul 6 03:00–10:00 Jul 7 04:00–10:00 Jul 9 04:00–10:00 Jul 10 03:00–10:00 Jul 11 03:00–10:00 Jul 12 04:00–10:00 Jul 13 04:00–11:00 Jul 14 04:00–10:00 Jul 15 08:00–10:00 Jul 16 04:00–10:00 Jul 18 06:00–11:00 Jul 19 04:00–11:00 Jul 20 04:00–12:00 Jul 21 04:00–08:00 Jul 22 04:00–09:00 Jul 24 05:00–11:00 Jul 25 04:00–05:00 Jul 26 07:00–08:00 Jul 27 05:00–11:00