Most often in May, 31 days.
Highest follower count seen that year: 10,215.
January
Jan 11 09:00–18:00 Jan 12 11:00–15:00 Jan 13 15:00–17:00, 19:00–20:00 Jan 14 05:00–06:00, 17:00–18:00, 21:00–24:00 Jan 15 00:00–01:00, 15:00–24:00 Jan 16 05:00–06:00, 15:00–24:00 Jan 17 20:00–24:00 Jan 18 00:00–01:00, 09:00–23:00 Jan 19 09:00–19:00 Jan 20 16:00–17:00, 21:00–22:00 Jan 21 05:00–06:00, 22:00–24:00 Jan 22 00:00–02:00, 15:00–18:00 Jan 23 16:00–22:00 Jan 25 10:00–20:00 Jan 26 07:00–09:00, 21:00–24:00 Jan 27 00:00–03:00, 09:00–15:00, 19:00–24:00 Jan 28 00:00–02:00, 04:00–05:00, 19:00–23:00 Jan 29 15:00–18:00, 21:00–24:00 Jan 30 16:00–24:00 Jan 31 00:00–06:00, 15:00–16:00, 19:00–20:00
February
Feb 1 10:00–16:00, 19:00–24:00 Feb 2 00:00–01:00, 10:00–11:00, 22:00–24:00 Feb 3 00:00–03:00, 21:00–23:00 Feb 4 01:00–02:00, 16:00–22:00 Feb 5 16:00–20:00 Feb 6 16:00–23:00 Feb 7 15:00–16:00 Feb 8 06:00–09:00, 13:00–15:00, 17:00–20:00, 23:00–24:00 Feb 9 07:00–14:00 Feb 10 00:00–02:00, 15:00–18:00, 20:00–24:00 Feb 11 00:00–02:00, 16:00–23:00 Feb 12 16:00–24:00 Feb 13 00:00–02:00, 05:00–06:00, 15:00–22:00 Feb 14 02:00–04:00, 15:00–21:00 Feb 15 07:00–17:00 Feb 16 01:00–05:00, 08:00–12:00, 20:00–24:00 Feb 17 00:00–04:00, 15:00–24:00 Feb 18 03:00–04:00, 16:00–23:00 Feb 19 03:00–06:00, 15:00–21:00 Feb 20 05:00–06:00, 15:00–20:00, 22:00–24:00 Feb 21 15:00–18:00 Feb 22 09:00–22:00 Feb 23 06:00–13:00, 21:00–24:00 Feb 24 05:00–06:00, 15:00–17:00, 21:00–24:00 Feb 25 08:00–16:00, 19:00–23:00 Feb 26 05:00–06:00, 20:00–21:00 Feb 27 03:00–04:00
March
Mar 7 07:00–10:00, 20:00–24:00 Mar 8 08:00–12:00 Mar 9 08:00–13:00, 21:00–24:00 Mar 10 07:00–09:00, 11:00–12:00, 20:00–23:00 Mar 11 00:00–01:00, 11:00–14:00, 22:00–24:00 Mar 13 10:00–16:00, 20:00–23:00 Mar 14 11:00–15:00, 19:00–23:00 Mar 15 07:00–12:00, 14:00–15:00 Mar 16 07:00–12:00 Mar 17 00:00–02:00 Mar 18 12:00–14:00, 23:00–24:00 Mar 19 00:00–01:00, 08:00–16:00 Mar 20 08:00–11:00 Mar 27 10:00–14:00 Mar 28 14:00–16:00, 22:00–24:00 Mar 29 00:00–01:00, 11:00–12:00 Mar 30 12:00–14:00, 22:00–23:00 Mar 31 08:00–09:00, 18:00–20:00
April
Apr 1 14:00–15:00, 18:00–19:00 Apr 2 09:00–11:00, 13:00–14:00 Apr 3 16:00–17:00 Apr 4 08:00–09:00, 21:00–24:00 Apr 5 00:00–01:00, 11:00–16:00 Apr 8 10:00–11:00, 19:00–24:00 Apr 9 00:00–01:00, 07:00–18:00, 23:00–24:00 Apr 10 00:00–02:00, 09:00–12:00, 15:00–16:00, 19:00–24:00 Apr 11 00:00–01:00, 07:00–12:00, 16:00–24:00 Apr 12 00:00–03:00 Apr 13 08:00–17:00, 21:00–24:00 Apr 14 09:00–15:00, 19:00–24:00 Apr 15 08:00–11:00, 13:00–15:00 Apr 16 01:00–03:00, 10:00–14:00 Apr 17 11:00–17:00 Apr 18 10:00–11:00 Apr 20 08:00–10:00 Apr 21 11:00–16:00, 20:00–24:00 Apr 22 00:00–01:00, 09:00–15:00, 17:00–24:00 Apr 23 00:00–02:00, 09:00–13:00, 17:00–18:00, 20:00–24:00 Apr 24 10:00–13:00, 20:00–24:00 Apr 25 00:00–01:00, 09:00–13:00, 20:00–24:00 Apr 26 08:00–14:00 Apr 27 01:00–02:00, 09:00–13:00, 15:00–17:00, 22:00–24:00 Apr 28 00:00–01:00, 09:00–11:00, 23:00–24:00 Apr 29 08:00–09:00, 17:00–19:00 Apr 30 08:00–12:00, 15:00–17:00
May
May 1 09:00–11:00, 22:00–24:00 May 2 00:00–03:00, 09:00–13:00, 21:00–24:00 May 3 00:00–02:00, 10:00–12:00, 21:00–23:00 May 4 09:00–14:00 May 5 09:00–14:00, 22:00–23:00 May 6 08:00–15:00 May 7 05:00–11:00, 16:00–24:00 May 8 00:00–02:00, 11:00–13:00, 16:00–18:00, 21:00–24:00 May 9 00:00–01:00, 09:00–16:00, 22:00–24:00 May 10 00:00–01:00, 10:00–12:00 May 11 00:00–02:00, 08:00–13:00, 22:00–23:00 May 12 00:00–01:00, 09:00–14:00, 16:00–17:00, 20:00–24:00 May 13 00:00–02:00, 08:00–24:00 May 14 08:00–15:00, 22:00–24:00 May 15 00:00–01:00, 09:00–15:00, 23:00–24:00 May 16 00:00–02:00, 09:00–12:00, 22:00–24:00 May 17 00:00–03:00, 11:00–17:00, 22:00–24:00 May 18 00:00–02:00, 08:00–12:00 May 19 09:00–17:00, 20:00–24:00 May 20 00:00–01:00, 08:00–13:00, 19:00–23:00 May 21 00:00–01:00, 09:00–17:00, 23:00–24:00 May 22 08:00–13:00, 16:00–17:00, 20:00–23:00 May 23 09:00–10:00 May 24 07:00–17:00, 20:00–24:00 May 25 00:00–03:00, 08:00–13:00, 15:00–18:00, 23:00–24:00 May 26 00:00–03:00, 09:00–12:00, 19:00–21:00, 23:00–24:00 May 27 00:00–02:00, 08:00–10:00, 14:00–16:00, 23:00–24:00 May 28 08:00–11:00, 16:00–18:00, 23:00–24:00 May 29 00:00–01:00, 09:00–15:00, 22:00–24:00 May 30 07:00–09:00, 14:00–16:00 May 31 11:00–14:00
June
Jun 1 08:00–11:00, 16:00–18:00, 22:00–24:00 Jun 2 00:00–02:00, 09:00–11:00, 14:00–16:00 Jun 3 00:00–02:00, 07:00–08:00, 13:00–16:00 Jun 4 00:00–01:00, 10:00–16:00, 22:00–24:00 Jun 5 00:00–02:00, 09:00–12:00 Jun 6 08:00–11:00, 14:00–18:00 Jun 7 08:00–11:00, 15:00–16:00, 21:00–24:00 Jun 8 00:00–03:00, 09:00–18:00, 22:00–24:00 Jun 9 00:00–01:00, 08:00–11:00, 13:00–24:00 Jun 10 07:00–08:00, 17:00–24:00 Jun 11 07:00–09:00 Jun 12 12:00–15:00, 22:00–24:00 Jun 13 07:00–10:00, 16:00–19:00 Jun 14 08:00–09:00 Jun 15 08:00–12:00 Jun 16 00:00–01:00, 09:00–10:00, 14:00–16:00, 23:00–24:00 Jun 17 08:00–09:00, 18:00–19:00, 22:00–23:00 Jun 18 08:00–09:00, 14:00–17:00 Jun 19 00:00–03:00, 13:00–15:00 Jun 20 13:00–15:00 Jun 21 14:00–16:00, 20:00–21:00 Jun 24 15:00–18:00, 22:00–24:00 Jun 25 00:00–02:00, 23:00–24:00 Jun 26 00:00–02:00, 17:00–19:00 Jun 27 17:00–18:00 Jun 28 18:00–24:00 Jun 29 00:00–01:00
July
Jul 2 23:00–24:00 Jul 4 07:00–09:00 Jul 5 06:00–08:00 Jul 17 15:00–17:00 Jul 18 01:00–02:00 Jul 19 07:00–09:00, 15:00–16:00 Jul 20 21:00–24:00 Jul 21 09:00–10:00 Jul 22 09:00–11:00 Jul 23 11:00–12:00 Jul 24 06:00–08:00, 10:00–13:00 Jul 25 07:00–09:00
August
Aug 2 15:00–16:00 Aug 3 20:00–23:00 Aug 4 08:00–10:00 Aug 5 08:00–09:00, 17:00–18:00 Aug 6 08:00–09:00 Aug 7 08:00–11:00 Aug 8 19:00–24:00 Aug 9 00:00–01:00, 16:00–19:00 Aug 10 08:00–12:00, 19:00–20:00 Aug 11 08:00–11:00, 13:00–14:00 Aug 12 00:00–01:00, 07:00–09:00, 11:00–12:00, 20:00–24:00 Aug 13 07:00–10:00, 12:00–13:00, 21:00–24:00 Aug 14 06:00–08:00, 18:00–19:00, 22:00–24:00 Aug 15 00:00–02:00, 10:00–14:00, 16:00–17:00 Aug 16 07:00–09:00, 22:00–24:00 Aug 17 16:00–18:00, 21:00–22:00 Aug 18 07:00–09:00, 18:00–22:00 Aug 19 07:00–11:00, 13:00–15:00, 17:00–18:00, 23:00–24:00 Aug 20 00:00–01:00, 09:00–11:00, 14:00–15:00
October
Oct 26 09:00–10:00
November
Nov 8 11:00–12:00 Nov 9 01:00–03:00, 10:00–13:00 Nov 17 13:00–20:00 Nov 20 12:00–14:00, 17:00–20:00, 23:00–24:00 Nov 21 22:00–24:00 Nov 22 00:00–01:00 Nov 23 11:00–12:00 Nov 24 13:00–15:00
December
Dec 4 20:00–22:00 Dec 5 22:00–24:00 Dec 6 00:00–01:00 Dec 7 02:00–04:00, 11:00–14:00 Dec 8 08:00–14:00, 17:00–20:00 Dec 9 15:00–18:00 Dec 10 00:00–03:00, 15:00–17:00, 19:00–21:00, 23:00–24:00 Dec 11 00:00–03:00, 16:00–23:00 Dec 12 03:00–04:00, 16:00–21:00 Dec 15 16:00–19:00, 22:00–24:00 Dec 16 00:00–03:00 Dec 18 16:00–19:00, 22:00–24:00 Dec 19 16:00–24:00 Dec 20 09:00–13:00, 17:00–19:00 Dec 21 10:00–12:00, 23:00–24:00 Dec 22 17:00–18:00