Muay Thai Festival (17 Mar)

This week sees the beginning of the 9th World Martial Arts Festival and Wai Khru Muay Thai in Ayutthaya - Thailand's Historical City.

but the link wasn't working?

National Elephant Day (13 March)

text from Kantary Hill Chiang Mai and image from CM108
National Thai Elephant Day, March 13th March 2013 at 9.30 am to 12.00 am and 1pm to 4pm.Thai people have high esteem and reverence towards elephants and the Thai government, in 1998, officially announced March 13th of each year to be the National Thai Elephant Day. On the Elephant Day, Maesa Elephant Camp will arrange a grand celebration for its elephants to mark the importance of this intelligent creature. ’Satoke', similar to kantoke, the traditional northern Thai style of dining, is organised into the world's largest elephant buffet - a marvellous sight to behold, as dozens upon dozens of giant pachyderms eat to their heart's content at a great banquet satoke. Children join the celebrations free of charge to promote the value of elephants and of the day for them.

Rubber Ducks (Mar 3)

Back a duck and come out and support charity on this fun-filled day!
It's a day for the whole family with games, activities, a talent contest organised by Legend Music and Siobhan’s Music Studio, rubber duckie cocktail contest and the Great Phuket Rubber Duck Race. Live entertainment will be provided by the winners of the 2012 PCF Race Day’s “Battle of the Young Bands” competition, the Legends of Siam.

There is a lot of information here...

More info here - I have never been - maybe?