Anniversary API input based on Hebrew Date

The current API for calculating Yahrzeit anniversaries uses  Gregorian dates which requires a sundown setting.  Please provide a similar API using Hebrew date input since this is well defined.  If I have a Hebew Date and do not  know the particulars of the Gregorian date,  there can be two possible English dates to input to get the list of anniversaries.  The alternative is  used Heb ro Greg converter and loop through a number of years which is inconvenient and Hebrew input to get  a list of years in one calc would be great.