How long is it until 2020 165438+20221October 8?

678 days. The year is a unit of time, and the earth revolves around the sun once. The current calendar stipulates that the average year is 365 days, so the period from 2020 to 2022 is 678 days, and the month is the time unit in the calendar. Traditionally, the period of the phase change of the moon is considered as the length of one month.