Small Heat is not the first day of Dog Day, but Dog Day will enter after Xiaoshu solar term, because Dog Day usually appears between Little Heat and End Heat every year. The following is the schedule for the Dog Days of Summer in 2022:

1. The schedule for the Dog Days of Summer in 2022: July 16 (Saturday) to July 25 (Monday), a total of ten days.

2. 2022 Zhongfu timetable: July 26 (Tuesday) to August 14 (Sunday), a total of twenty days.

3. The 2022 end of the ambush timetable: August 15th (Monday) to August 25th (Thursday), a total of ten days.

The above schedule for the Dog Days in 2022 is determined based on the first, middle and last days shown on the Chinese calendar. In ancient times, the time for the Dog Days to start was calculated from the third Geng day of the summer solstice, and the 2022 Summer Solstice is June 21 (Tuesday). From this, it can be concluded that the first Geng day after the summer solstice this year is June. 23rd, the second Geng Day is July 6, and the second Geng Day is July 11.

So if the dog days are calculated from the third Geng day of the summer solstice, the dog days will begin on July 11. If according to the calendar, the dog days will begin on July 16. The specific local traditional customs shall prevail.

In general, Xiaoshu is not the first day of summer, but it will enter the dog days after Xiaoshu, because the time of summer usually occurs between Xiaoshu and Sushu every year.