This document appears to be a schedule listing dates and events in Thai language. It includes dates ranging from the 21st day of some month in 2555 to the 30th day of the following month. Various events are listed on certain dates, though the language used is not one I am fluent in so I cannot provide details on the specific events.

1. 26 27 28 29 30
summer 2555 :

2. --- ,
2555 21
– -