What day of the week was October 27, 1930?

The day of the week October 27th, 1930 fell on was a Monday.

There were 59 days until Christmas.

Ratifications exchanged in London for the first London Naval Treaty the signed in April modifying the 1925 Washington Naval Treaty and the arms limitation treaty's modified provisions, go into effect immediately, further limiting the expensive naval arms race among its five signatories.