Calendar is lunisolar calendars are many cultures used, is the crystallization of astronomy. In particular, the tone of the calendar date indicate the phase of the Moon (or lunar), also positive date of the calendar indicates the position of the Earth in its motion around the sun. Calendar Yin-Yang has great impact and importance in our lives.
To predict the weather and gas, seasons, tides, agriculture, calculate the date for the great work like weddings, started construction of homes, shopping graves or objects of great value ... this is not only prevalent in the rural areas but also in major cities. Countries use lunisolar calendar including Vietnam, China, Taiwan, Japan, Singapore, Korea. In particular, the only Muslim country to use the lunar calendar.
         Function:
* Provide information lunisolar calendar by month in select
* Introduce a lunisolar calendar date conversion