Most often in November, 30 days.
Highest follower count seen that year: 8,250.
July
Jul 26 00:00–02:00, 12:00–17:00 Jul 27 18:00–24:00 Jul 28 22:00–24:00 Jul 29 00:00–01:00, 22:00–24:00 Jul 30 01:00–02:00, 21:00–24:00 Jul 31 22:00–24:00
August
Aug 1 00:00–02:00, 22:00–24:00 Aug 2 00:00–02:00, 12:00–15:00 Aug 3 14:00–17:00, 21:00–23:00 Aug 4 21:00–24:00 Aug 5 22:00–24:00 Aug 6 00:00–03:00, 21:00–24:00 Aug 7 22:00–24:00 Aug 8 00:00–03:00, 21:00–24:00 Aug 9 00:00–01:00, 12:00–16:00, 21:00–23:00 Aug 10 17:00–23:00 Aug 12 21:00–24:00 Aug 13 00:00–02:00, 21:00–24:00 Aug 14 00:00–02:00, 20:00–24:00 Aug 15 00:00–03:00, 21:00–24:00 Aug 16 00:00–02:00, 12:00–16:00, 21:00–24:00 Aug 17 00:00–04:00, 18:00–23:00 Aug 18 01:00–02:00 Aug 19 21:00–24:00 Aug 20 00:00–02:00, 21:00–24:00 Aug 21 00:00–02:00, 22:00–24:00 Aug 22 00:00–03:00, 22:00–24:00 Aug 23 00:00–02:00, 17:00–20:00 Aug 24 19:00–24:00 Aug 26 21:00–24:00 Aug 27 00:00–02:00, 22:00–24:00 Aug 28 00:00–03:00, 22:00–24:00 Aug 29 00:00–03:00, 21:00–24:00 Aug 30 00:00–01:00, 23:00–24:00 Aug 31 00:00–05:00, 21:00–24:00
September
Sep 1 00:00–02:00 Sep 2 19:00–24:00 Sep 3 22:00–24:00 Sep 4 00:00–01:00, 21:00–24:00 Sep 5 00:00–02:00, 21:00–24:00 Sep 6 00:00–01:00, 22:00–24:00 Sep 7 00:00–02:00, 22:00–24:00 Sep 8 00:00–02:00 Sep 16 19:00–24:00 Sep 17 20:00–24:00 Sep 18 20:00–24:00 Sep 19 00:00–01:00, 20:00–24:00 Sep 20 11:00–17:00 Sep 21 19:00–24:00 Sep 22 20:00–24:00 Sep 23 20:00–24:00 Sep 24 00:00–01:00, 20:00–24:00 Sep 25 00:00–01:00, 21:00–23:00 Sep 26 21:00–24:00 Sep 27 00:00–02:00, 19:00–24:00 Sep 28 00:00–01:00, 20:00–24:00 Sep 30 21:00–24:00
October
Oct 1 00:00–02:00, 20:00–24:00 Oct 2 00:00–01:00, 21:00–24:00 Oct 3 00:00–02:00, 21:00–24:00 Oct 4 00:00–02:00, 12:00–15:00, 21:00–24:00 Oct 5 00:00–01:00, 19:00–24:00 Oct 7 22:00–24:00 Oct 8 00:00–02:00, 21:00–24:00 Oct 9 00:00–02:00, 22:00–24:00 Oct 10 00:00–02:00, 22:00–24:00 Oct 11 00:00–02:00, 12:00–18:00 Oct 12 18:00–24:00 Oct 14 22:00–24:00 Oct 15 00:00–02:00, 22:00–24:00 Oct 16 00:00–02:00, 22:00–24:00 Oct 17 00:00–03:00, 20:00–24:00 Oct 18 00:00–02:00, 13:00–18:00 Oct 19 18:00–23:00 Oct 20 22:00–24:00 Oct 21 00:00–02:00, 22:00–24:00 Oct 22 00:00–03:00, 19:00–24:00 Oct 23 00:00–02:00, 21:00–24:00 Oct 24 00:00–03:00, 21:00–24:00 Oct 25 00:00–02:00, 21:00–24:00 Oct 26 00:00–03:00, 21:00–24:00 Oct 27 00:00–01:00, 21:00–24:00 Oct 28 00:00–01:00, 22:00–24:00 Oct 29 00:00–01:00, 21:00–24:00 Oct 30 00:00–03:00, 21:00–24:00 Oct 31 00:00–03:00, 23:00–24:00
November
Nov 1 00:00–03:00, 21:00–24:00 Nov 2 00:00–04:00, 22:00–24:00 Nov 3 00:00–02:00, 21:00–24:00 Nov 4 21:00–24:00 Nov 5 00:00–03:00, 21:00–24:00 Nov 6 00:00–02:00, 21:00–24:00 Nov 7 00:00–02:00, 21:00–24:00 Nov 8 00:00–03:00, 22:00–24:00 Nov 9 00:00–03:00, 22:00–24:00 Nov 10 00:00–02:00, 22:00–24:00 Nov 11 00:00–01:00, 21:00–24:00 Nov 12 00:00–02:00, 21:00–24:00 Nov 13 00:00–03:00, 22:00–24:00 Nov 14 00:00–04:00, 21:00–24:00 Nov 15 00:00–03:00, 20:00–24:00 Nov 16 00:00–02:00, 21:00–24:00 Nov 17 00:00–02:00, 21:00–22:00 Nov 18 22:00–24:00 Nov 19 00:00–03:00, 21:00–24:00 Nov 20 00:00–03:00, 21:00–24:00 Nov 21 00:00–03:00 Nov 22 20:00–24:00 Nov 23 00:00–01:00, 20:00–24:00 Nov 24 00:00–01:00, 21:00–24:00 Nov 25 00:00–01:00, 20:00–24:00 Nov 26 00:00–02:00, 21:00–24:00 Nov 27 00:00–02:00, 21:00–24:00 Nov 28 00:00–02:00 Nov 29 13:00–16:00, 19:00–24:00 Nov 30 00:00–01:00, 12:00–14:00, 20:00–24:00
December
Dec 1 21:00–24:00 Dec 2 00:00–01:00, 21:00–24:00 Dec 3 00:00–02:00, 21:00–24:00 Dec 4 00:00–03:00, 22:00–24:00 Dec 5 00:00–02:00, 19:00–21:00 Dec 6 12:00–16:00 Dec 7 11:00–14:00, 20:00–24:00 Dec 8 00:00–02:00 Dec 9 20:00–24:00 Dec 10 00:00–01:00, 22:00–24:00 Dec 11 00:00–03:00, 22:00–24:00 Dec 12 00:00–03:00 Dec 14 15:00–24:00 Dec 15 00:00–01:00, 22:00–24:00 Dec 16 21:00–24:00 Dec 17 00:00–03:00, 20:00–24:00 Dec 18 00:00–02:00, 20:00–24:00 Dec 19 21:00–24:00 Dec 20 10:00–16:00 Dec 21 14:00–18:00, 20:00–24:00 Dec 22 00:00–02:00, 22:00–24:00 Dec 23 00:00–01:00, 20:00–24:00 Dec 24 00:00–02:00, 21:00–24:00 Dec 25 00:00–02:00, 21:00–24:00 Dec 26 00:00–02:00, 21:00–24:00 Dec 27 00:00–01:00 Dec 28 15:00–21:00 Dec 29 22:00–24:00 Dec 30 00:00–02:00 Dec 31 23:00–24:00