ATTN: Nearby Thai Consulate Closures for Songkran;
Vientiane & Savannakhet - April 13th & 16th
Phnom Penh - April 13th & 16th
Kuala Lumpur & Penang - April 13th & 16th
Kota Bharu - Sunday April 15th
Hanoi & Ho Chi Minh City - April 13th
Yangon - April 13th & 16th
Border crossings are open normal hours and do not close for holidays
P/S: All Thai Immigration offices are closed the 12th, 13th, & 16th
TLDR : Answer Summary
The Thai Consulates in various cities will be closed for Songkran on specific dates: Vientiane & Savannakhet, Phnom Penh, Kuala Lumpur & Penang on April 13th & 16th; Kota Bharu on April 15th; and Hanoi & Ho Chi Minh City on April 13th; Yangon on April 13th & 16th. However, border crossings will operate normally during the holidays, and all Thai Immigration offices will be closed on the 12th, 13th, and 16th.