14th April: Ambedkar jayanthi

Ambedkar jayanthi is celebrated on 14th April every year. Dr. Ambedkar was born on 14th April, 1891. It is a public holiday in all of the Indian states. 

In addition to being a jurist, philanthropist, historian etc., he is also widely known for his active role as the Chairman of the Constitution Drafting Committee of India. You can find more information on Dr. Ambedkar here.

The below stamps depict Babasaheb Ambedkar and are issued by India.

   

2nd April: International Children's Book Day

International Children's Book Day is a yearly event sponsored by the International Board on Books for Young People. This day was first observed in the year 1967. International Children’s book day is observed on or around Hans Christian Andersen's birthday, April 2nd. Many events are held on this occasion.

The above stamp was issued by India in the year 1978 depicting the World Book Fair, held at New Delhi.

1st April: Islamic Republic Day of Iran

Islamic Republic Day of Iran is celebrated on Farvardin 12, which falls on or around April 1st every year.

On April 1st, 1979, the Iranian Revolution resulted in the overthrow of the Pahlavi dynasty under Mohammad Reza Shah Pahlavi, who was supported by the United States, and its eventual replacement with an Islamic republic under the Grand Ayatollah Ruhollah Khomeini. 

Mohammad Reza Shah Pahlavi was the ruler of Iran (Shah of Iran) from 1941 till 1979. The above image depicts the Shah on a circa 1959 stamp issue by Iran.

30th March: National Doctor's Day (America)

 On October 30, 1990, President George Bush designated March 30 as America's National Doctor's Day.This day was first observed in the year 1991. This day is commonly celebrated in healthcare organizations to recognize the contributions of physicians to everyone's lives and communities. 

The following stamp was issued by India in the year 2009.

27th March: World Theater Day

World Theater Day is celebrated on 27th March every year. It was first observed in the year 1961 by the International Theatre Institute (ITI). 
This  day is  celebrated  so that everyone  in the world can collaborate around the theme of Theatre and a Culture of Peace.

On this day, ITI invites a personality who is outstanding in theatre or outstanding in heart and spirit from another field to share his or her reflections on theatre and international harmony.

The author of the Message of World Theatre Day 2002 was Girish Karnad - the only Indian theatre personality to have this honor till date.

The author of the Message of World Theatre Day 2014 is the South African play writer, designer, director and installation maker Brett Bailey.

The above stamp was issued by Kenya in 1979. It shows a scene from "Lion and the Jewel", a novel written by Wole Soyinka. This Nigerian author won the Nobel Prize for Literature in 1986 and incidentally was the World Theatre Day Message Author in the same year.

26th March: Bangladesh Independence Day

Bangladesh's Independence day is celebrated on 26th March every year. Bangladesh got its Independence from Pakistan on 26th March 1971. This day  acts as a memorial  of thousands of civilians who died for their own country during the Bangladesh Liberation War. 

Dhaka is the capital of independent Bangladesh. Above is a stamp depicting the Kamalapur railway station in Dhaka issued in the year 1983.    This railway station is the largest in the country and the most important terminal for transportation between Dhaka and the rest of the country.

23rd March: World Meteorological Day

The World Meteorological day is celebrated on March 23rd. It was first observed in the year 1950. 

The World Meteorological Organization is an intergovernmental organization which was founded in 1873. This UN body  recognizes the importance of weather, climate and meteorological forecasting to the natural environment and human well-being.

The above stamp was issued by India in 1975