Local Sidereal Time (LST) is the right ascension on your meridian. The table below gives the dates when LST is "on the hour" at 8 pm standard time or 9 pm daylight saving time.
00 Nov. 20th 01 Dec. 6th 02 Dec. 21st 03 Jan. 5th 04 Jan. 20th 05 Feb. 4th 06 Feb. 20th 07 Mar. 7th 08 Mar. 22nd 09 Apr. 7th 10 Apr. 22nd 11 May 7th 12 May 22nd 13 Jun. 7th 14 Jun. 22nd 15 Jul. 7th 16 Jul. 22nd 17 Aug. 6th 18 Aug. 22nd 19 Sep. 6th 20 Sep. 21st 21 Oct. 7th 22 Oct. 21st 23 Nov. 5th 24 Nov. 20th