As far as I can figure, these are the Trump court dates and 2024 election important dates. The date for trial in GA election case hasn't been set yet, pending the arraignment. All subject to change & any additional charges, of course. And my apologies for errors and omissions!
My understanding is that Doofus does NOT have to appear in any civil trial, but his appearance will be mandatory for all criminal proceedings.
2023
September 6 - GA election interference case arraignment date
October 2 - NY state civil fraud case trial begins against Trump, his oldest children and his companies.
2024
January 15 – E. Jean Carroll civil defamation trial begins; Iowa caucuses
January 23 – Possible New Hampshire primary
February 8 – Nevada caucuses
February 24 – South Carolina primary
February 27 – Possible Michigan primary
March 2 – Possible Michigan caucuses; Idaho caucuses
March 3 – DC party-run primary
March 4 – Federal trial on 2020 election criminal charges begins; North Dakota caucuses
March 5 (Super Tuesday) – Primaries in Alabama, Alaska, Arkansas, California, Colorado, Maine, Massachusetts, Minnesota, North Carolina, Oklahoma, Tennessee, Texas, Utah caucuses, primaries in Vermont, Virginia
March 12 – Primary in Georgia, Hawaii caucuses, primaries in Mississippi, Washington
March 19 – Primaries in Arizona, Florida, Illinois, Kansas, Ohio
March 23 – Primary in Louisiana
March 25 – Trump’s criminal trial in New York related to hush-money payments in 2016 begins
April 2 – Primaries in Delaware, potentially New York, Rhode Island, Wisconsin
April 23 – Primary in Pennsylvania
April 30 – Primary in Connecticut
May 7 – Primary in Indiana
May 14 – Primaries in Maryland, Nebraska, West Virginia
May 20 – Criminal trial in classified documents case begins
May 21 – Primaries in Kentucky, Oregon
June 4 – Primaries in Montana, New Jersey, New Mexico, South Dakota
July 15-18 – GOP convention in Milwaukee
November 5 - General election