How many days are there from 20 16.7.4 to 2020.6. 1?

According to the perpetual calendar, July 4, 20 16 to June 2020 1 day is 1428 days. July 4th, 20 16 to June, 2020 1 day, spanning four years, in which 20 16 is a leap year and 20 16 has 366 days. 20 17, 20 18 and 20 19 are all normal years, with 365 days in each of these three years. The number of days in 2020 needs to be subtracted from the date before June 1.