Hi 147. Thank you for the response. Yes, it should have said 5-6 days for Shavuos. Concerning Motzei Shmini Atzeret, your statement is true, but I am not sure that everyone holds by that since in some Ashkenazi communities, Tachanun is resumed on 25 Tishrei which implies the Svara that it is Tashlumim (which is not nogea b’zman hazeh post Churban Bayit Sheni and therefore the same applies in Ashkenazi communities Motzei Shavuot).
Your list at the conclusion of your post parallels the list in Megillas Ta’anis. That too according to some *may be* Batel B’Zman HaZeh. At any rate, we could list all the Yahrzeits of all the Avot, Neviim, Melachim, Anshei Knesset HaGedola, Tannaim, Amoraim, Geonim, Rishonim & Acharonim (Ad HaYom HaZeh) and fill up the calendar.