This study seeks to examine the existence of holiday effect in two Asian Stock Markets, Singapore and India. India and Singapore seem to have similar traditions. Many Hindus, being the citizen of Singapore celebrate Diwali and worship Buddhism, which was preached by King Siddhartha (then part of India). Keeping in mind this fact, the daily closing prices and stock returns are regressed to investigate the existence of pre-holiday and post-holiday effect in the two countries and during the common holidays from a period of 1992 to 2018. It was found that in both the countries the pre-holiday effect did not exist. It had been replaced by the post-holiday effect. Even though Singapore is developed, the post-holiday return was found to be significant in this country. Among the specific holidays, the New Year and the Good Friday could attract the attention of investors at 10% significance level in post-holiday period. As for India, none of the holidays but the trading days not-corresponding a holiday provided significant return at 10% level in post and pre-holiday analysis. The post-holiday effect was however found in the form New Year effect in India at 5% significance level. The Common holiday like Deepwali did not achieve the returns significant enough at 5% or 10% level, neither in the pre-holiday period nor in the post-holiday.