Thailand
1 January: New Year's Day
5 March: Makha Bucha Day
6 April: Chakri Memorial Day
13-15 April: Songkran Festival
3 May: Labor Day
5 May: Coronation Day
7 May: Royal Ploughing Ceremony Day
2 June: Visakha Bucha Day
31 July: Asarnha Bucha Day
2 August: Buddhist Lent Day
12 August: The Queen's Birthday
23 October: Chulalongkorn day
5 December: The King's Birthday
10 December: Constitution Day
31 December: New Year's Eve
Government officies are usually closed on Public Holidays and on Mondays if the holiday take place during the weekend.

Malaysia
1 January: New Year's Day
(Except Johor, Kedah, Kelantan, Perlis & Terengganu)
12 & 13 February: Chinese New Year (Kelantan & Terengganu - 12 Feb only)
23 February: Hari Raya Qurban
15 March: Awal Muharram (Maal Hijrah 1423)
25 April: Installation of SPB Yang di-Pertuan Agong
1 May: Labour Day
25 May: Prophet Muhammad's Birthday
26 May: Wesak Day
1 June: Birthday of the King DYMM Yang DiPertuan Agong
31 August: National Day 
4 November: Deepavali (except Sarawak & Federal Territory of Labuan)
*6 & 7 December: Hari Raya Puasa *
25 December: Christmas

Japan
Jan 01 -- New Year's Day.
Jan 12 -- Coming of Age day or Young Adults Day.
Feb 11 -- National Foundation Day.
Mar 20 -- Spring Equinox.
Apr 29 -- Nature Day.
May 03 -- Constitution Day.
May 04 -- People's Day.
May 05 -- Children's Day.
Jul 19 -- Day of the Sea or Marine Day.
Sep 20 -- Respect for the Elders Day.
Sep 23 -- Autumn Equinox.
Oct 11 -- School Sports Day.
Nov 03 -- Culture Day.
Nov 23 -- Labor Thanksgiving Day.
Dec 23 -- Emperor's Birthday.

The following days are not official national holidays but you are not likely to be able to schedule any business meetings on the day.
Apr 01 -- New School year starts, job changing and office moving
day.
Aug 13 \ Festival of the Souls. (Wed Thu Fri)
Aug 14 -- This is the period when Japanese visit the graves of
Aug 15 / their ancestors.
Dec 28 -- Last working day of the year for most office workers.
Dec 29 (see above)
Dec 30 (see above)
Dec 31 (see above)

India
Jan 1: New Year's Day Regional
Jan 26: Republic Day
Jan 21: Id ul Juha (Feast of Sacrifice)
Feb 10: Islamic New Year (Muharram)
Mar 25: Holi (Hindu Spring Festival)
Mar 25: Good Friday
Mar 27: Easter
Apr 18: Sri Rama Navami (Sri Rama's Birthday)
Apr 21: Milad un Nabi (The Prophet's Birthday)
Apr 22: Mahavir Jayanthi (Mahavira's Birthday)
May 23: Buddha Purnima (Buddha Day)
Aug 15: Independence Day
Aug 26: Krishna Janamashti
Oct 2 :Mahatma Ghandi's Birthday
Oct 12: Dassera (Vijaya Dashami)
Nov 2: Deepavali or Diwali (Festival of Lights)
Nov 3 :Id ul Fitr (End of Ramadan)
Nov 15: Guru Nanak's Birthday
Dec 25: Christmas Day