The IRS finally published clarification that the 120 day extensions of typical disaster relief DO NOT APPLY to the COVID-19 disaster relief granted in Notice 2020-23. July 15 was the last day. The FAQ is printed below and can be found here: https://www.irs.gov/newsroom/filing-and-payment-deadlines-questions-and-answers.
A: No. Notice 2020-23 did not extend the relief provided in section 17 of Rev. Proc. 2018-58 to taxpayers engaging in section 1031 like-kind exchanges. Therefore, the section 1031 deadlines addressed in items 26 and 27 of section 6 of Rev. Proc. 2018-58 that fall on or after April 1, 2020, and before July 15, 2020, are not extended beyond July 15, 2020.