What are the specific dates of "the day of employment engaged in the professional work" and "the day of obtaining the Employment Gold Card", respectively?

“The day of employment engaged in the professional work” is the first day of the employment period of the foreign special professional employment (work) permit document issued by the Ministry of Labor or by the Ministry of Education, while “the day of obtaining the Employment Gold Card” is the “date of issue” shown on the Employment Gold Card.