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Jumada al-Thani, also known as Jumada al-Akhirah, Jumada al-Akhir, or Jumada II, is the sixth month of the Islamic calendar. The word Jumda (), from which the name of the month is derived, is used to denote dry, parched land, a land devoid of rain. JumÃÂdÃÂ () may also be related to a verb meaning 'to freeze', and another account relates that water would freeze in pre-Islamic Arabia during this time of year.
The Islamic calendar is a purely lunar calendar, and months begin when the first crescent of a new moon is sighted. Since the Islamic lunar year is 11 to 12 days shorter than the solar year, Jumada al-Thani migrates throughout the seasons. The estimated start and end dates for Jumada al-Thani are as follows (based on the Umm al-Qura calendar of Saudi Arabia):