September 30, 2022-2022.438+00.3 How many days are there?

Three days. Year, month and day are units of time. According to the rotation of the earth, the phenomenon of alternating day and night forms the concept of "day"; According to the concept of "moon" formed by the revolution of the moon around the earth and the concept of "year" formed by the alternation of seasons caused by the revolution of the earth around the sun. There are 30 days in September, so the distance from September 30, 2022 to June 38, 2022 +20221October 3 is 3 days. The material movements on which these three concepts are based are independent of each other.