Walmart offers the AcuRite Wireless Weather and Intelli-Time Clock Station, model no. 00754, for $10. (Amazon offers it for the same price for Prime members only, although it will take one to two months to ship.) Opt for in-store pickup to avoid the $5.97 shipping charge. That's tied with our mention from a week ago and the lowest price we could find by $8. It automatically sets the time, day, date (through 2050), and temperature, and requires five AA batteries (not included).