DB/Eloquent clause to get all rows from today laravel 5

I have a model which has a date. Since it's based a non-Gregorian calendar, I have to break the date into 3 columns dd, mm and yy to do operations on it.

I need to retrieve 3 rows that have the date of today or after.

I need to write a condition where

  yy >= today's year
  mm >= today's month

and for the result of this implement

  mm >= today's month
  dd >= today's date 

How to write a clause to meet this condition.

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