The upgrade of subdistrict municipality Chantha Nimit to a town municipality was announced in the Royal Gazette on Wednesday. The announcement was signed on February 18 by Deputy Interior Minister Boonjong Wongtrairat (บุญจง วงศ์ไตรรัตน์). The upgrade was decided in the municipal board meeting on December 12 2009. The announcement does not state the date the upgrade becomes effective, according to the meeting transcript it became effective on December 30 2009.
The town Chantha Nimit (เทศบาลตำบลจันทนิมิต) is located directly east of the town Chanthaburi, separated from it by the Chanthaburi river. The local government entity dates back to the sanitary district (Sukhaphiban) Chantha Nimit (สุขาภิบาลจันทนิมิตร) created in 1955 (Gazette). Like all sanitary districts it was upgraded to a subdistrict municipality (เทศบาลตำบลจันทนิมิต) in 1999.