Most often in January, 31 days.
Highest follower count seen that year: 109,817.
January
Jan 1 11:00–16:00 Jan 2 08:00–09:00, 13:00–15:00, 18:00–21:00 Jan 3 09:00–17:00, 21:00–24:00 Jan 4 08:00–13:00, 15:00–17:00, 20:00–22:00 Jan 5 08:00–10:00, 13:00–17:00, 21:00–23:00 Jan 6 10:00–15:00, 18:00–21:00 Jan 7 09:00–13:00, 15:00–19:00, 21:00–24:00 Jan 8 00:00–01:00, 09:00–16:00, 18:00–20:00 Jan 9 09:00–10:00, 13:00–16:00, 20:00–23:00 Jan 10 10:00–14:00, 21:00–24:00 Jan 11 00:00–01:00, 10:00–15:00, 17:00–20:00, 22:00–24:00 Jan 12 00:00–02:00, 13:00–17:00 Jan 13 12:00–18:00, 23:00–24:00 Jan 14 00:00–01:00, 09:00–23:00 Jan 15 10:00–14:00, 16:00–19:00, 23:00–24:00 Jan 16 00:00–01:00, 15:00–19:00 Jan 17 00:00–01:00, 10:00–17:00, 23:00–24:00 Jan 18 12:00–18:00, 22:00–23:00 Jan 19 14:00–19:00 Jan 20 10:00–14:00 Jan 21 11:00–14:00, 21:00–23:00 Jan 22 11:00–13:00, 17:00–20:00 Jan 23 13:00–17:00, 21:00–23:00 Jan 24 10:00–14:00, 19:00–20:00 Jan 25 10:00–12:00, 14:00–18:00, 22:00–24:00 Jan 26 09:00–14:00, 17:00–20:00 Jan 27 11:00–19:00, 22:00–24:00 Jan 28 10:00–14:00 Jan 29 12:00–14:00, 16:00–18:00, 22:00–24:00 Jan 30 09:00–11:00, 15:00–16:00, 22:00–23:00 Jan 31 11:00–14:00, 22:00–24:00
February
Feb 1 09:00–13:00, 18:00–20:00 Feb 2 09:00–11:00, 14:00–17:00 Feb 3 08:00–10:00, 12:00–15:00, 20:00–23:00 Feb 4 08:00–13:00, 17:00–22:00 Feb 5 10:00–12:00, 14:00–16:00 Feb 6 10:00–11:00, 15:00–17:00, 19:00–21:00 Feb 7 10:00–12:00, 20:00–21:00 Feb 8 10:00–13:00, 15:00–17:00 Feb 9 09:00–11:00, 13:00–17:00, 20:00–22:00 Feb 10 10:00–13:00, 16:00–18:00, 21:00–24:00 Feb 11 10:00–14:00, 16:00–20:00 Feb 12 09:00–14:00, 16:00–21:00 Feb 13 07:00–10:00, 14:00–16:00, 19:00–22:00 Feb 14 08:00–12:00, 17:00–18:00, 21:00–23:00 Feb 15 08:00–13:00, 15:00–19:00, 21:00–23:00 Feb 16 08:00–10:00, 14:00–15:00, 22:00–23:00 Feb 17 10:00–13:00, 15:00–21:00 Feb 18 08:00–16:00 Feb 19 08:00–17:00 Feb 20 08:00–10:00, 14:00–16:00, 22:00–23:00 Feb 21 09:00–12:00, 14:00–18:00, 21:00–23:00 Feb 22 08:00–14:00, 17:00–23:00 Feb 23 08:00–11:00, 14:00–19:00 Feb 24 08:00–15:00, 19:00–21:00 Feb 25 09:00–12:00, 15:00–22:00 Feb 26 11:00–13:00, 16:00–17:00, 23:00–24:00 Feb 27 08:00–09:00, 15:00–17:00 Feb 28 09:00–13:00, 17:00–20:00
March
Mar 1 08:00–13:00, 17:00–20:00 Mar 2 08:00–10:00, 14:00–18:00 Mar 3 09:00–11:00, 13:00–17:00, 22:00–23:00 Mar 4 10:00–16:00, 19:00–20:00 Mar 5 09:00–12:00, 14:00–18:00 Mar 6 08:00–10:00, 15:00–18:00 Mar 7 08:00–20:00 Mar 8 09:00–10:00, 13:00–14:00, 17:00–20:00 Mar 9 08:00–10:00, 13:00–15:00 Mar 10 08:00–11:00, 14:00–18:00 Mar 11 08:00–16:00 Mar 12 08:00–11:00, 13:00–16:00 Mar 13 08:00–11:00, 14:00–16:00 Mar 14 08:00–11:00, 13:00–18:00 Mar 15 08:00–12:00, 15:00–18:00 Mar 16 08:00–10:00, 14:00–17:00 Mar 17 08:00–13:00, 18:00–19:00 Mar 18 08:00–12:00, 15:00–18:00 Mar 19 09:00–12:00, 15:00–18:00 Mar 20 08:00–12:00, 14:00–19:00 Mar 21 09:00–11:00, 14:00–16:00 Mar 22 08:00–12:00, 14:00–17:00 Mar 23 07:00–10:00, 14:00–16:00 Mar 24 08:00–11:00, 14:00–15:00 Mar 25 09:00–11:00, 16:00–20:00 Mar 26 07:00–11:00, 13:00–16:00 Mar 27 07:00–10:00, 14:00–15:00, 18:00–19:00 Mar 28 09:00–13:00, 16:00–19:00 Mar 29 08:00–13:00 Mar 30 07:00–10:00, 13:00–14:00 Mar 31 06:00–09:00, 14:00–16:00
April
Apr 1 07:00–13:00 Apr 2 07:00–13:00 Apr 3 08:00–09:00, 13:00–15:00 Apr 4 08:00–09:00, 12:00–17:00 Apr 5 09:00–12:00, 15:00–17:00 Apr 6 08:00–10:00, 13:00–15:00 Apr 7 08:00–12:00, 14:00–18:00 Apr 8 07:00–11:00, 13:00–15:00 Apr 9 10:00–13:00, 16:00–17:00 Apr 10 07:00–10:00, 12:00–13:00, 16:00–18:00 Apr 11 09:00–12:00, 14:00–17:00, 22:00–23:00 Apr 12 07:00–09:00, 12:00–15:00 Apr 13 06:00–09:00, 13:00–15:00 Apr 14 08:00–10:00, 13:00–14:00 Apr 15 08:00–10:00, 12:00–14:00 Apr 16 08:00–12:00, 14:00–16:00 Apr 17 08:00–09:00, 15:00–16:00 Apr 18 09:00–13:00, 15:00–18:00 Apr 19 08:00–11:00, 13:00–15:00 Apr 20 06:00–07:00, 13:00–16:00 Apr 21 08:00–12:00, 14:00–15:00, 20:00–22:00 Apr 22 08:00–12:00, 15:00–18:00 Apr 23 16:00–18:00, 22:00–24:00 Apr 24 08:00–10:00, 14:00–16:00 Apr 25 09:00–12:00, 14:00–17:00, 21:00–23:00 Apr 26 09:00–14:00, 16:00–19:00 Apr 27 07:00–09:00, 16:00–18:00 Apr 28 08:00–14:00 Apr 29 07:00–10:00, 14:00–18:00, 22:00–23:00 Apr 30 09:00–13:00, 15:00–17:00
May
May 1 08:00–10:00, 13:00–16:00, 21:00–22:00 May 2 08:00–14:00, 16:00–19:00 May 3 07:00–18:00 May 4 07:00–09:00, 15:00–18:00 May 5 08:00–13:00, 15:00–18:00 May 6 08:00–10:00, 12:00–14:00, 17:00–18:00 May 7 09:00–10:00, 12:00–16:00 May 8 07:00–09:00, 12:00–15:00 May 9 08:00–10:00, 12:00–15:00 May 10 07:00–12:00, 14:00–16:00 May 11 07:00–09:00, 13:00–15:00 May 12 07:00–11:00, 14:00–16:00 May 13 06:00–10:00, 13:00–17:00, 21:00–22:00 May 14 09:00–12:00, 14:00–18:00 May 15 07:00–10:00, 14:00–18:00 May 16 07:00–10:00, 13:00–16:00, 22:00–23:00 May 17 09:00–17:00, 20:00–24:00 May 18 07:00–09:00, 14:00–15:00 May 19 07:00–10:00, 15:00–17:00 May 20 08:00–11:00, 15:00–16:00, 22:00–23:00 May 21 08:00–12:00, 14:00–16:00 May 22 06:00–09:00, 13:00–15:00 May 23 08:00–10:00, 12:00–15:00, 20:00–22:00 May 24 10:00–15:00, 22:00–23:00 May 25 07:00–09:00, 13:00–15:00 May 26 08:00–11:00, 14:00–17:00 May 27 07:00–11:00, 13:00–17:00 May 28 08:00–09:00, 11:00–12:00, 15:00–17:00, 21:00–24:00 May 29 09:00–11:00, 14:00–17:00 May 30 09:00–13:00, 15:00–17:00 May 31 08:00–13:00, 16:00–18:00, 22:00–24:00
June
Jun 1 08:00–10:00, 14:00–16:00, 18:00–23:00 Jun 2 09:00–11:00, 14:00–17:00, 21:00–23:00 Jun 3 09:00–11:00, 14:00–16:00, 21:00–23:00 Jun 4 08:00–10:00, 12:00–15:00, 22:00–24:00 Jun 5 09:00–10:00, 22:00–24:00 Jun 6 09:00–17:00, 22:00–24:00 Jun 7 00:00–01:00, 08:00–12:00, 16:00–18:00, 22:00–24:00 Jun 8 07:00–09:00, 14:00–15:00, 21:00–22:00 Jun 9 09:00–12:00, 16:00–18:00, 22:00–23:00 Jun 10 09:00–11:00, 13:00–17:00, 22:00–23:00 Jun 11 09:00–11:00, 13:00–15:00, 21:00–23:00 Jun 12 09:00–10:00, 14:00–16:00, 21:00–22:00 Jun 13 09:00–11:00, 13:00–16:00 Jun 15 08:00–11:00, 13:00–16:00 Jun 16 08:00–14:00 Jun 17 07:00–11:00, 16:00–18:00 Jun 18 07:00–09:00, 11:00–14:00, 16:00–20:00 Jun 19 08:00–10:00, 14:00–16:00 Jun 20 05:00–08:00, 10:00–12:00, 19:00–20:00 Jun 21 08:00–14:00, 18:00–21:00 Jun 22 08:00–10:00, 14:00–16:00 Jun 23 08:00–13:00, 16:00–18:00, 21:00–22:00 Jun 24 09:00–12:00, 14:00–16:00, 21:00–22:00 Jun 25 09:00–13:00, 21:00–23:00 Jun 26 09:00–10:00, 14:00–18:00 Jun 27 07:00–11:00, 14:00–16:00 Jun 28 09:00–13:00, 16:00–18:00 Jun 29 08:00–10:00, 13:00–16:00, 21:00–22:00 Jun 30 08:00–10:00, 13:00–17:00
July
Jul 1 08:00–09:00, 12:00–14:00 Jul 2 10:00–12:00, 15:00–16:00, 21:00–24:00 Jul 3 08:00–10:00, 13:00–15:00 Jul 4 08:00–10:00, 13:00–15:00, 21:00–24:00 Jul 5 09:00–11:00, 14:00–18:00 Jul 6 11:00–14:00, 17:00–18:00 Jul 7 10:00–13:00 Jul 8 09:00–12:00, 15:00–16:00, 22:00–23:00 Jul 9 09:00–12:00, 14:00–20:00 Jul 10 07:00–09:00, 14:00–19:00 Jul 11 10:00–17:00, 21:00–23:00 Jul 12 09:00–16:00 Jul 13 08:00–10:00, 13:00–16:00 Jul 14 08:00–12:00, 14:00–19:00 Jul 15 07:00–10:00, 13:00–16:00 Jul 16 09:00–11:00, 13:00–15:00 Jul 17 09:00–10:00, 14:00–15:00 Jul 18 10:00–12:00, 14:00–16:00 Jul 19 08:00–13:00 Jul 20 07:00–10:00, 14:00–16:00 Jul 21 09:00–12:00, 15:00–18:00, 20:00–23:00 Jul 22 11:00–15:00 Jul 23 08:00–11:00, 14:00–17:00 Jul 24 08:00–10:00, 14:00–19:00 Jul 25 09:00–10:00, 14:00–17:00, 19:00–20:00 Jul 26 09:00–12:00, 15:00–18:00 Jul 27 08:00–10:00, 14:00–15:00