Every courier company has different regulations. Like ordinary courier companies, Zhongtong, Huitong and Dayun all get off work at 7 am and 7 pm, while Shentong and Tong Yuan get off work at 7 am and 8 pm. JD.COM and San Francisco have the longest working hours, 7 am and 9 pm, which may be 1 1 or 12.
For every place, the off-duty time is different. For example, in the three northeastern provinces, it gets dark early and generally gets off work earlier.