October 1, 2490, has held the position. "Province" established. The 2490 Act established the province has been in force since October 1, 2490 to the present.
The 1 October 2005. 2490 upgraded to a "plank" established by the act of establishment of Kalasin province. The 2490 the effect from the date of 1 October 2490 until the present.