A Calendar is a simple form of organising the days for the social, religious, commercial and administrative purposes. The Calendar will be arranged by providing the names to days, weeks, months and years. Simply, Calendar is a list of list of planned events. The word “Calendar” is derived from the word “Calendae.” The Calendae is a term that is used to represent the first day of the month in the Roman Calendar. The calendar is comprised of 12 months and each month has either 28, 30 or 31 days. The 12 months in the calendar are January (31 days), February (28 days in typical year and 29 days in leap year), March (31 days), April (30 days), May (31 days), June (30 days), July (31 days), August (31 days), September (30 days), October (31 days), November (30 days) and December (31 days). In Common Years, the calendar will be of 365 days, whereas in leap years (occurs on every four years) we will have 366 days. On the leap year, we will have an extra day (Leap Day) in the February Month. The Leap year is designed to make the calendar aligned with the solar year and astronomical seasons. The months are organised in the way to break up the year into shorter period based on the Moon’s orbit around the earth. Every day in the year has its own celebrations, observances and important occasions. The 365 days of the years are filled with several National Celebrations, International Observances, World Wide Celebrations and much more. Happydays-365.com presents you the calendar of the year 2019 and its celebrations on every day. Just click on the particular day of the Calendar to know the national, international and worldwide observances on that day. Click here to know What Day is Today?