Most often in October, 30 days.
Highest follower count seen that year: 1,940.
July
Jul 25 07:00–14:00 Jul 26 07:00–14:00, 18:00–20:00 Jul 27 07:00–11:00, 16:00–17:00 Jul 28 06:00–14:00 Jul 29 07:00–13:00 Jul 30 06:00–14:00, 23:00–24:00 Jul 31 00:00–01:00, 06:00–14:00
August
Aug 1 06:00–14:00, 20:00–21:00 Aug 2 06:00–14:00, 16:00–18:00 Aug 3 07:00–12:00 Aug 4 06:00–14:00 Aug 5 06:00–14:00 Aug 6 05:00–14:00, 21:00–24:00 Aug 7 08:00–14:00, 20:00–22:00 Aug 8 06:00–14:00, 20:00–22:00 Aug 9 06:00–14:00 Aug 10 06:00–10:00 Aug 11 06:00–14:00 Aug 12 06:00–13:00, 20:00–24:00 Aug 13 06:00–08:00, 10:00–13:00, 21:00–23:00 Aug 14 06:00–09:00, 11:00–14:00 Aug 15 06:00–14:00, 20:00–22:00 Aug 16 06:00–14:00 Aug 17 06:00–11:00 Aug 18 06:00–08:00, 10:00–14:00, 23:00–24:00 Aug 19 00:00–03:00, 06:00–08:00, 10:00–14:00, 20:00–22:00 Aug 20 06:00–14:00 Aug 21 07:00–14:00, 20:00–22:00 Aug 22 06:00–14:00 Aug 23 06:00–14:00 Aug 24 06:00–10:00, 20:00–23:00 Aug 25 06:00–07:00, 20:00–21:00 Aug 26 07:00–09:00, 11:00–14:00 Aug 28 06:00–14:00 Aug 29 06:00–09:00, 12:00–13:00 Aug 31 10:00–12:00
September
Sep 1 05:00–14:00 Sep 2 05:00–06:00, 09:00–12:00 Sep 3 05:00–14:00 Sep 4 05:00–08:00, 11:00–14:00 Sep 5 06:00–14:00 Sep 6 05:00–13:00 Sep 7 11:00–12:00 Sep 8 05:00–13:00 Sep 9 05:00–13:00 Sep 10 05:00–09:00, 12:00–14:00 Sep 11 06:00–13:00 Sep 12 05:00–14:00 Sep 13 05:00–13:00 Sep 14 08:00–11:00 Sep 15 06:00–13:00 Sep 16 05:00–11:00 Sep 17 05:00–12:00 Sep 18 01:00–02:00, 06:00–13:00 Sep 19 06:00–08:00, 10:00–15:00 Sep 20 06:00–14:00 Sep 21 05:00–08:00 Sep 22 06:00–13:00, 18:00–20:00 Sep 23 00:00–01:00, 05:00–13:00 Sep 24 05:00–13:00, 21:00–24:00 Sep 25 05:00–13:00, 21:00–23:00 Sep 26 05:00–14:00 Sep 27 06:00–13:00 Sep 28 05:00–14:00 Sep 29 05:00–09:00, 11:00–14:00, 22:00–24:00 Sep 30 05:00–14:00
October
Oct 1 00:00–03:00, 05:00–14:00 Oct 2 05:00–07:00, 09:00–13:00, 22:00–24:00 Oct 3 00:00–01:00, 06:00–14:00 Oct 4 05:00–13:00 Oct 5 06:00–14:00 Oct 6 08:00–14:00, 21:00–23:00 Oct 7 06:00–13:00 Oct 8 06:00–13:00 Oct 9 05:00–14:00 Oct 10 06:00–14:00, 23:00–24:00 Oct 11 00:00–01:00, 06:00–14:00, 22:00–24:00 Oct 12 00:00–02:00, 06:00–09:00 Oct 13 05:00–13:00 Oct 14 06:00–13:00, 23:00–24:00 Oct 15 06:00–14:00 Oct 16 05:00–14:00, 21:00–23:00 Oct 17 06:00–13:00 Oct 18 05:00–14:00 Oct 19 06:00–08:00, 17:00–18:00 Oct 20 06:00–07:00, 09:00–14:00 Oct 21 08:00–14:00, 20:00–23:00 Oct 22 06:00–13:00 Oct 23 05:00–14:00, 21:00–24:00 Oct 24 00:00–01:00, 07:00–13:00, 21:00–23:00 Oct 25 08:00–09:00, 11:00–14:00 Oct 27 05:00–13:00 Oct 28 06:00–14:00 Oct 29 06:00–13:00, 23:00–24:00 Oct 30 05:00–14:00 Oct 31 05:00–13:00, 21:00–22:00
November
Nov 1 05:00–13:00 Nov 2 06:00–12:00, 22:00–23:00 Nov 3 05:00–14:00 Nov 4 05:00–13:00, 20:00–22:00 Nov 5 06:00–14:00 Nov 7 06:00–13:00 Nov 8 05:00–13:00 Nov 9 06:00–10:00 Nov 10 08:00–11:00 Nov 11 05:00–08:00, 10:00–13:00 Nov 12 06:00–14:00 Nov 13 05:00–11:00 Nov 14 06:00–13:00 Nov 15 06:00–12:00 Nov 16 05:00–09:00 Nov 17 05:00–09:00, 12:00–14:00 Nov 18 06:00–13:00 Nov 19 06:00–08:00, 10:00–13:00 Nov 20 06:00–13:00 Nov 21 08:00–13:00 Nov 22 05:00–13:00, 21:00–22:00 Nov 23 06:00–09:00 Nov 24 05:00–14:00 Nov 25 06:00–13:00, 23:00–24:00 Nov 26 00:00–02:00, 06:00–13:00 Nov 27 06:00–14:00, 22:00–24:00 Nov 28 06:00–13:00 Nov 29 07:00–14:00, 20:00–23:00 Nov 30 05:00–11:00
December
Dec 1 05:00–13:00 Dec 2 06:00–12:00, 21:00–23:00 Dec 3 06:00–14:00, 23:00–24:00 Dec 4 06:00–07:00, 10:00–14:00, 17:00–19:00 Dec 5 05:00–09:00, 11:00–13:00, 17:00–18:00 Dec 6 06:00–13:00 Dec 7 08:00–10:00 Dec 11 07:00–13:00, 22:00–24:00 Dec 12 06:00–14:00 Dec 13 06:00–13:00 Dec 14 06:00–08:00 Dec 15 06:00–14:00, 17:00–18:00 Dec 16 06:00–07:00, 10:00–14:00 Dec 17 06:00–13:00, 17:00–19:00 Dec 18 06:00–14:00, 17:00–19:00 Dec 19 05:00–13:00, 19:00–21:00 Dec 20 05:00–14:00 Dec 21 19:00–23:00 Dec 22 06:00–11:00 Dec 23 06:00–13:00 Dec 26 08:00–13:00 Dec 27 08:00–13:00 Dec 28 07:00–12:00 Dec 29 07:00–13:00 Dec 30 06:00–12:00, 18:00–20:00 Dec 31 06:00–09:00, 21:00–23:00