Natal Neptune is the sign where your Neptune was placed during birth time, and from there other houses are calculated clock-wise.
If you were born with Neptune in Scorpio, then your natal house is Scorpio (Vrischika Rasi) and during transit, Venus forming conjunction (in Scorpio), sextile (aspect of 60° which are Capricorn and Virgo in this case), square (aspect of 90° which are Aquarius and Leo here), trine (aspect of 120° which are Pisces and Cancer here), opposition (aspect of 180° which is Taurus here) are discussed in this article.
Conjunction is transiting through same sign as in birth chart, sextile is transiting 3rd or 11th house, trine is transiting 5th or 9th house, opposition is transiting 7th house from natal sign.
Transit Saturn conjunct Natal Neptune : Generally this transit characterizes negative upsetting attitudes, confusions, self doubt and uncertainty. The native may feel emotionally depressed because of painful subconscious memories of the past and may require the attention of a psychiatrist. The native is unable to find solutions to the challenges of life, just broods over his condition. There is uncertainity everywhere. The native is haunted by more imagined conditions than real, rather his own negative thinking is his worst enemy. If this conjunction is afflicted the native may suffer due to deception in business, legal and professional affairs. If the two planets are harmoniously placed in the natal chart and well aspected in transit then the native may gain through business activities related to art and music, entertainment, photography, chemicals, drugs and cultural institutions etc. A transit for meditation and practically visualizing how to achieve success.
Transit Saturn Sextile Natal Neptune : Spiritual and material progress through subconscious insight characterizes this transit. The native can meditate and concentrate now and can make use of his creative imaginations practically. The native advances his professional affairs with the help of his deeper intuitive insights into the future trends. The native can be benefited by working with charitable institutions and hospitals. Some natives recollect the memories of previous birth to use gainfully in the present birth.
Transit Saturn Square Natal Neptune : Unclear objectives, great uncertainty, irrational fear, phobias and pessimism characterizes this transit. The native is subjected to psychological problems based on past subconscious memories. The native also suffers in his work performance due to psychological disorders of his near ones. The native may incur loss of fortune and reputation on account of exposition of his past misdeeds. The native thinks that his troubles are due to misdeeds of his enemies, rather these are due to certain phobias. Being a transit of severe negative emotional states, the native may be prone to drug abuse, unwise psychic practices, destructive thought forms and undesirable psychic influences such as astral entities. Under aggravations, the native requires psychiatric care and in extreme cases he may be institutionalized.
Transit Saturn Trine Natal Neptune : Imaginative and intuitive inspirations and their practical application in spiritualism or in one’s field of activity characterize this transit. The native may progress in such spiritual disciplines as meditation and be able to peep into the past memories, even of his previous birth. The native can use this faculty to infer what is going in the mind of people in power and also the cultural and economic trends operating now. The native can be trusted now to impart the secret information to the concerned without leakage. The native can be better off now in professions related to psychology, hospitals, educational institutions religions and asylums.
Transit Saturn Opposition Natal Neptune : Inner conflicts, emotional depressions, remorse and self doubt characterize this transit. The native may feel his relations affected due to his own uncertainties and guilt. The native broods over his condition of lack of self discipline, self confidence and becomes burden on other family members. The native may indulge in misuse of drugs, alcohol and psychic practices to gain self confidence. Such practices and addictions may lead the native to hospitalization or be institutionalized. This transit can lead to dishonesty in business and there is fear of exposition of misdeeds done in the past and the native may suffer due to disgrace and loss of reputation.