The Rescue Vehicle stamp issue is now moved to 04 May 2024. Coincidentally it corresponds to the International Firefighters Day (Hari BOMBA Sedunia): https://www.firefightersday.org/
Since it is a Saturday, those states where Saturday is an off day will see the products being sold on the next working day.
I think the most concordant is Ulu Kinta or Ipoh cop as the national event is held there: 
KLites, see you on Monday 06 May 2024!
May the 4th be with you!
Oooo, by the way, the images are floating all over the internet. Here are the extracts.
sky52200
myfdc 