The Department of Lands and the Department of Lands's Ladies Association organized a blood donation project to offer as royal merit on His Majesty King Maha Vajiralongkorn Bodindradebayavarangkun's birthday on 20 July 2025 and Her Majesty the Queen's birthday on 3 June 2025, No. 1/2025 at the Surveying and Mapping Building, the Department of Lands, Meeting Room 1, 6th Floor, on 26 March 2025.