World Meteorological Day, which recognises the work of national meteorological and hydrological services, is observed on which date every year?

Introduction / Context:
World Meteorological Day celebrates the contribution of national meteorological and hydrological services to the safety and well being of society. It highlights the importance of weather and climate information for disaster management, agriculture, transport, and many other sectors. In competitive examinations, this day is often asked along with other environment and science related international days. Knowing the specific date helps candidates answer factual questions accurately and also connect it with themes like climate change and early warning systems.

Given Data / Assumptions:

• The question mentions World Meteorological Day.
• It requires the exact calendar date of the annual observance.
• The options are 24 March, 23 March, 20 March, and 25 March.
• We assume the standard United Nations and World Meteorological Organization calendar is being referenced.

Concept / Approach:
The concept here is basic recall of major scientific and environmental observances. World Meteorological Day is observed on 23 March each year, marking the establishment of the World Meteorological Organization. The approach is to identify this specific date among nearby options. Many exam resources place World Meteorological Day in a small cluster with World Water Day and International Day of Forests, so you should memorise this cluster correctly to avoid confusion.

Step-by-Step Solution:
Step 1: Identify that the question is about World Meteorological Day, not World Water Day or other observances.Step 2: Recall that this day is celebrated each year on 23 March to commemorate the founding of the World Meteorological Organization.Step 3: Examine the options: 24 March, 23 March, 20 March, and 25 March.Step 4: Confirm that 23 March exactly matches the remembered date.Step 5: Choose 23 March as the correct answer.

Verification / Alternative check:
To verify, recall the late March sequence of global days: 21 March for forests, 22 March for water, and 23 March for meteorology. This consecutive ordering forests, water, weather is a simple mnemonic to check your answer. If you know that 22 March is World Water Day, then one day later, 23 March, is logically reserved for meteorological services, making the answer easy to confirm.

Why Other Options Are Wrong:
24 March and 25 March may be connected with other observances but are not the official date of World Meteorological Day. 20 March is also incorrect and falls outside the cluster of environment related days typically observed from 21 to 23 March. These distractors test whether you have memorised the exact date or are only guessing based on rough memory of the month and general time frame.

Common Pitfalls:
Students often confuse 23 March with 22 March because both are related to natural resources and environment. Another common error is to mix up World Meteorological Day with World Environment Day, which is observed on 5 June and focuses more broadly on environmental protection. To avoid such confusion, use a simple table of March observances and review it regularly, linking each date with a key word like forests, water, or weather for quick recall.

Final Answer:
World Meteorological Day is observed every year on 23 March.