His secondary progressed Moon will conjoin secondary progressed Saturn in right ascension on June 30, 2017, and in longitude on July 25.
What is required for the impeachment process to take place likely precludes such an act until after the swearing in of the 116th Congress on or about January 3rd, 2019. After that there would need to be 5 votes in the House of Representatives for it to be approved for trial by the Senate where a 2/3 majority would be needed to convict.
So it is not likely that charges would be brought before 2019. Even then a Republican held Senate would not likely vote to convict. If party leaders made it clear to trump that the Senate had decided to convict in order to hopefully salvage seats in the general election of 2020 he would possibly decide to resign. Getting to that point could take until January 2020.
http://www.attn.com/stories/14657/what-it-takes-impeach-president-trump
How Congress Could Impeach President Trump
“Removal actually requires five separate votes: two by the House Judiciary Committee, two by the entire House, then another vote in the Senate to convict.”
“… the House did vote to refer impeachment of George W. Bush to the House Judiciary Committee in June 2008; it died without a vote being taken.”
“A Trump impeachment would require a Republican (at least for now) House to vote twice against a president in their own party — assuming a Republican House Judiciary Committee would let it get that far. Even then, Democrats would still need nearly 20 Republican senators to cross party lines to convict in a trial.”
“But if Democrats can re-take the House in the 2018 mid-term, or Trump becomes so unpopular that his own party turns on him, impeachment becomes much more likely. Or at least, much easier.”
Impeachment process of Nixon from it's beginning until first passage of Articles of Impeachment adopted by House Judiciary Committee on July 27, 1974.
http://www.historyplace.com/unitedstates/impeachments/nixon.htm
” In October of 1973, Watergate Special Prosecutor Archibald Cox, who had been appointed by the Nixon administration, publicly vowed to obtain the tapes despite Nixon’s strong objections.”
“This resulted in the “Saturday Night Massacre” on October 20 …”
The minute-by-minute events of the “Saturday Night Massacre” were covered live by stunned reporters on network television starting about 8:30 p.m. and sent a political shockwave throughout America that led to immediate calls for impeachment.”
“Ten days later, impeachment proceedings in the House of Representatives began as the House Judiciary Committee, chaired by Rep. Peter Rodino, started its preliminary investigation.”
https://library.cqpress.com/cqalmanac/document.php?id=cqal73-867-26366-1225636#H2_113
Chronology of Watergate Developments in 1973
Oct. 30
“Impeachment Inquiry. The House Judiciary Committee held its first meeting to discuss procedures for investigating whether Nixon should be impeached, and voted to grant Chairman Peter W. Rodino Jr. (D N.J.) power to issue subpoenas to obtain witnesses and documents both for the impeachment inquiry and for the committee’s consideration of Vice President-designate Gerald R. Ford.”
The date of the passage of the first Articles of Impeachment adopted by the House Judiciary Committee: July 27, 1974, was 9 months after its first meeting regarding the matter.
On January 13, 2020 the transiting Sun joins transiting Saturn and Pluto in an assault on his natal Saturn in right ascension. He will be a 73 year old speed freak.
January 13, 2020 – trump natal Saturn 115°43′, transit Sun at 294°42′ opposite, transit Saturn at 294°42′ opposite, transit Pluto at 294°45′ opposite. Transits will be conjunct Watergate arrests (June 17, 1972, 2:30 am, EDT, Washington, DC) Zenith (294°22′), opposite Watergate Mars (114°48′), and conjunct Nixon’s White House IC (295°51′).