Most often in October, 31 days.
Highest follower count seen that year: 1,856.
July
Jul 26 00:00–02:00, 05:00–08:00, 20:00–22:00 Jul 27 00:00–03:00, 20:00–22:00 Jul 28 05:00–07:00, 23:00–24:00 Jul 29 00:00–04:00, 20:00–22:00 Jul 30 07:00–08:00, 19:00–23:00 Jul 31 19:00–21:00
August
Aug 1 19:00–21:00, 23:00–24:00 Aug 2 00:00–01:00, 08:00–09:00, 20:00–22:00 Aug 3 00:00–04:00, 08:00–10:00, 22:00–24:00 Aug 4 00:00–03:00, 08:00–09:00, 19:00–24:00 Aug 5 06:00–08:00, 20:00–21:00 Aug 6 06:00–07:00, 23:00–24:00 Aug 7 00:00–01:00, 20:00–24:00 Aug 8 00:00–01:00, 03:00–04:00, 07:00–09:00, 21:00–24:00 Aug 9 00:00–01:00, 05:00–07:00, 21:00–24:00 Aug 10 00:00–07:00, 22:00–24:00 Aug 11 01:00–08:00, 22:00–24:00 Aug 12 00:00–08:00, 23:00–24:00 Aug 13 05:00–08:00 Aug 14 00:00–02:00, 07:00–08:00, 23:00–24:00 Aug 15 00:00–03:00, 06:00–09:00, 23:00–24:00 Aug 16 00:00–02:00, 05:00–07:00, 23:00–24:00 Aug 17 00:00–02:00, 07:00–08:00, 23:00–24:00 Aug 18 00:00–03:00, 06:00–08:00 Aug 19 06:00–07:00, 20:00–21:00 Aug 20 02:00–03:00, 23:00–24:00 Aug 21 00:00–02:00, 04:00–08:00, 23:00–24:00 Aug 22 00:00–04:00, 06:00–08:00, 23:00–24:00 Aug 23 00:00–07:00, 18:00–20:00 Aug 24 01:00–08:00 Aug 25 01:00–02:00 Aug 28 15:00–16:00 Aug 29 22:00–24:00 Aug 30 06:00–09:00, 15:00–18:00 Aug 31 04:00–10:00
September
Sep 2 02:00–08:00 Sep 3 08:00–09:00 Sep 4 05:00–09:00 Sep 5 00:00–02:00, 04:00–08:00, 21:00–24:00 Sep 6 00:00–01:00, 04:00–09:00 Sep 7 00:00–02:00, 04:00–05:00, 23:00–24:00 Sep 8 00:00–03:00, 14:00–15:00, 23:00–24:00 Sep 9 00:00–01:00, 05:00–11:00, 23:00–24:00 Sep 10 00:00–01:00, 05:00–09:00 Sep 11 05:00–10:00, 19:00–21:00, 23:00–24:00 Sep 12 00:00–01:00, 04:00–09:00, 21:00–24:00 Sep 13 00:00–08:00, 23:00–24:00 Sep 14 00:00–08:00, 23:00–24:00 Sep 15 00:00–09:00, 23:00–24:00 Sep 16 00:00–01:00, 05:00–08:00, 23:00–24:00 Sep 17 00:00–08:00, 19:00–21:00, 23:00–24:00 Sep 18 00:00–08:00, 20:00–24:00 Sep 19 00:00–03:00, 05:00–10:00, 23:00–24:00 Sep 20 00:00–03:00, 23:00–24:00 Sep 21 00:00–01:00, 03:00–09:00, 23:00–24:00 Sep 22 00:00–01:00, 04:00–08:00, 19:00–21:00, 23:00–24:00 Sep 23 00:00–01:00, 05:00–08:00 Sep 24 00:00–01:00, 05:00–08:00 Sep 25 05:00–07:00, 22:00–24:00 Sep 26 00:00–01:00, 05:00–09:00, 23:00–24:00 Sep 27 04:00–08:00 Sep 28 00:00–01:00, 05:00–09:00, 23:00–24:00 Sep 29 00:00–07:00, 23:00–24:00 Sep 30 00:00–01:00, 03:00–07:00, 23:00–24:00
October
Oct 1 00:00–01:00, 04:00–07:00 Oct 2 00:00–02:00, 06:00–09:00, 22:00–24:00 Oct 3 00:00–07:00, 22:00–24:00 Oct 4 00:00–02:00, 05:00–07:00 Oct 5 00:00–01:00, 03:00–09:00, 23:00–24:00 Oct 6 00:00–07:00, 23:00–24:00 Oct 7 00:00–01:00, 05:00–07:00 Oct 8 05:00–07:00, 23:00–24:00 Oct 9 00:00–02:00, 04:00–07:00 Oct 10 00:00–01:00, 23:00–24:00 Oct 11 00:00–01:00, 05:00–07:00, 22:00–24:00 Oct 12 00:00–01:00, 06:00–10:00, 21:00–24:00 Oct 13 00:00–01:00, 04:00–07:00, 23:00–24:00 Oct 14 00:00–01:00, 05:00–07:00, 23:00–24:00 Oct 15 00:00–02:00, 05:00–07:00 Oct 16 00:00–01:00, 05:00–07:00 Oct 17 00:00–02:00, 05:00–07:00 Oct 18 00:00–01:00, 06:00–07:00 Oct 19 05:00–07:00, 23:00–24:00 Oct 20 00:00–01:00, 05:00–07:00 Oct 21 05:00–06:00, 23:00–24:00 Oct 22 00:00–01:00, 04:00–07:00 Oct 23 00:00–01:00, 05:00–08:00 Oct 24 00:00–01:00, 04:00–07:00 Oct 25 00:00–02:00, 04:00–09:00 Oct 26 01:00–07:00 Oct 27 00:00–01:00, 04:00–08:00, 23:00–24:00 Oct 28 00:00–03:00, 08:00–09:00, 23:00–24:00 Oct 29 00:00–07:00 Oct 30 01:00–08:00 Oct 31 06:00–08:00
November
Nov 1 00:00–07:00, 19:00–21:00 Nov 2 00:00–02:00, 23:00–24:00 Nov 3 00:00–05:00, 19:00–24:00 Nov 4 00:00–02:00, 04:00–08:00 Nov 5 00:00–02:00, 05:00–07:00 Nov 6 02:00–07:00 Nov 7 04:00–07:00, 23:00–24:00 Nov 8 00:00–01:00, 04:00–07:00 Nov 9 00:00–03:00, 06:00–08:00 Nov 10 01:00–07:00 Nov 11 00:00–02:00, 05:00–08:00, 23:00–24:00 Nov 12 00:00–07:00 Nov 13 00:00–07:00 Nov 14 00:00–07:00 Nov 15 00:00–02:00, 04:00–07:00 Nov 16 00:00–02:00 Nov 17 00:00–07:00 Nov 18 00:00–07:00 Nov 19 00:00–03:00, 05:00–07:00 Nov 20 00:00–03:00 Nov 21 02:00–07:00 Nov 22 06:00–08:00 Nov 24 01:00–07:00 Nov 25 01:00–02:00, 05:00–07:00 Nov 26 00:00–07:00 Nov 27 01:00–02:00, 04:00–07:00 Nov 28 01:00–08:00 Nov 29 00:00–02:00, 05:00–07:00 Nov 30 00:00–07:00
December
Dec 1 01:00–07:00 Dec 2 05:00–07:00 Dec 3 00:00–03:00, 05:00–07:00 Dec 4 01:00–07:00 Dec 5 01:00–07:00 Dec 6 00:00–03:00, 06:00–07:00 Dec 7 02:00–03:00, 07:00–10:00 Dec 8 01:00–07:00 Dec 9 03:00–07:00 Dec 10 01:00–07:00 Dec 11 02:00–08:00 Dec 13 00:00–07:00 Dec 14 02:00–07:00 Dec 15 00:00–07:00 Dec 16 04:00–07:00 Dec 17 01:00–07:00 Dec 18 01:00–03:00, 05:00–07:00 Dec 19 02:00–07:00 Dec 20 02:00–08:00 Dec 21 02:00–08:00 Dec 22 01:00–08:00 Dec 23 01:00–08:00 Dec 24 03:00–08:00 Dec 25 04:00–06:00 Dec 26 04:00–08:00 Dec 27 01:00–08:00 Dec 28 02:00–07:00 Dec 29 02:00–06:00 Dec 30 02:00–07:00 Dec 31 03:00–07:00