<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by KiraNarise:
The McDonalds in Bangkok opens at 6:00am but does not serve breakfast. They close at 3:00am, so its burgers & fries 21 hours a day.</font>
I know that one or two are open late in the Silom-Suriwongse area, but most in town, such as along Sukumvit and Ploencit seem to uniformly close at 10pm.