South lunar node house is undefined

[kasun72]

Hi!
First of all, thank you for this great library!

Some dates generate south lunar node house is undefined, when using houseSystem as a "whole-sign" and zodiac as a "sidereal".

This is the origin object with data,
const origin = new Origin({year: 1995, month: 0, date: 15, hour: 14, minute: 59, latitude: 6.24469906, longitude: 80.05708058});

I use version: 1.1.0
following dates also happen,
1992-0-15, 2020-0-15, 2021-0-25

Please consider and give me a idea to solve this.