05/07←  2025-05-08 CWB twsfc map  →05/09

2025-05-08 00 UTC	2025-05-08 03 UTC
2025-05-08 06 UTC	2025-05-08 09 UTC
2025-05-08 12 UTC	2025-05-08 15 UTC
2025-05-08 18 UTC	2025-05-08 21 UTC