Sure, but the End of Bronze/Start of Copper will certainly be within this period of incredible change in the industry:
May 1979: Daredevil 158- First Miller art
Aug 1979 - Tomb of Dracula cancelled, effectively ending the Marvel BA of Horror
Nov 1979: Iron Man #128 "Demon in a Bottle"
Feb 1980: She-Hulk #1
Mar 1980: King Conan 1
Apr 1980: Star Trek 1
Spring 1980: Epic Illustrated 1
Aug 1980 - Tomb of Dracula Magazine cancelled
Sep 1980: X-Men 137- Death of Dark Phoenix
Oct 1980: DC Presents 26- first New Teen Titans
Nov 1980: New Teen Titans 1
Nov 1980: Moon Knight gets his own series
1980 : Superboy Spectacular- Direct Sales only 1-shot
Jan 1981: Daredevil 168- First Miller -script; Intro Elektra
Jan 1981: X-Men 141- Days of Future Past launches alternate time line that would form the basis for lots of uber-fandom-based X-continuity over the next several years
Jan 1981: Capital Comics launches and publishes Nexus 1
Mar 1981: X-Men 143- Final Claremont/Byrne
Mar 1981: Dazzler 1- First direct-sales-only for an ongoing series
Mar 1981: Bizarre Adventures starts
Mar 1981: Captain Canuck is cancelled
May 1981: Eclipse Magazine starts
June 1981: The Hulk magazine ends
Jul 1981: Fantastic Four 232 - Byrne takes over FF writing/art duties.
Aug 1981: Rogue debuts
Aug 1981: Marvel Premiere ends
Nov 1981: Captain Victory 1- First Pacific Comics issue, direct-only publisher
1981: Marvel cancels many of its reprint titles, including MGC, AA, TTA, MSA, etc.
1981: Stan Lee moves to California to head Marvel TV/movie properties, leaving Jim Shooter in charge
1981: Jenette Kahn promoted to President of DC Comics, leading the way for Vertigo and GN explosion.
Feb 1982: Starslayer #1 (first Rocketeer)
Mar 1982: Warrior Magazine #1 /Alan Moore (Marvelman, V for Vendetta)
Mar 1982: Marvel Fanfare #1 - New Format
Apr 1982: Marvel introduces Graphic Novel series, including Death of Captain Marvel and X-Men: God Loves, Man Kills
May 1982: Saga of the Swamp Thing #1
May 1982: First Groo the Wanderer
June 1982: G.I. Joe: A Real American Hero #1
June 1982: Marvel Super-Hero Contest of Champions #1 (first Marvel mini-series, precursor to Secret Wars)
Sept 1982: Love and Rockets debuts
Sept 1982: Wolverine Mini #1
1982: Harvey Comics, Warren Publishing and Spire Comics cease operations
1982: DC cancels remaining Horror titles
1982: Start of creator royalties at Marvel and DC
1982: Steve Geppi founds Diamond
Thanks for putting this together--awesome checklist with which to destroy my wallet!