I understand and missing "Bangkok Songkran Splendours Festival" So much !!!
This information, may help you understand "Songkran Festival" in Thailand.
The word Songkran means to pass or to move into. In this context, the meaning implies to the passing and the moving of the sun, the moon and the other planets into one of the zodiacal orbits.
And the Grand Songkran Festival which falls in Aries indicates the new era of the Thai New Year. Owing to the ancient Indian belief, the Grand Songkran Festival is most appropriate to be the Thai New Year due to the timing of the best season which is known as the spring of India which comes right after the cold season of winter. Also, there are other aspects supporting this belief such as blooming flowers, the fresh atmosphere of nature and the livelihood of all living creatures.
With the great influence from the Indians, the Songkran Festival portrays the typical ways of life of the Thais which involve the agricultural aspects. Free from their regular routine work, the Thai citizens will find time to perform their annual rites of showing respect to their ancestors. The highlight of the festival will include the younger Thais paying respect to their elders by sprinkling their hands with scented water. And in order to welcome the New Year, the celebration will include the delightful colourful local entertainment, which in fact, suitably unites the mutual relationship between members of the family, society, nature and the surroundings. Therefore, this Songkran Festival has proved to be the most important and grandest festival of the year. Moreover, our neighbouring countries such as Myanmar, Cambodia and Lao PDR. have also organised this type of festival.
Happy Thai New Year 
to all Geun❤Shin