Guru Moodam, or Guru Moudhya, is a specific period in Hindu calendars. During this period no auspicious ceremonies are held. Guru Moudhya 2017 time and date is given below: It is also known as Guru Moudyami.
Guru Moodam is from October 12, 2017 to November 9, 2017. Marriages are not performed during the period. Thus you will not find Marriage dates and other auspicious function dates in October and November 2017
The total number of days in a Guru Moodam are 28 days. Roughly a month.