What's actually happening
Neptune takes about 165 years to complete one circuit of the zodiac, spending roughly 14 years in each sign. Leo is a fixed fire sign ruled by the Sun. The Neptune in Leo transit that ran from roughly 1914 to 1929 is often cited as the defining astrological background of the Jazz Age, the golden age of Hollywood, and the simultaneous catastrophe of the First World War.
What the tradition makes of it
Neptune in Leo dissolves the boundary between the personal and the mythic. The individual becomes a canvas for something larger — the star, the hero, the romantic lead. The self is not merely lived; it is performed, idealized, and invested with a sense of destiny that can be genuinely inspiring or genuinely delusional.
The creative arts flourish under this transit with unusual intensity. The capacity for self-expression becomes a spiritual practice. The audience's hunger for figures of glamour and significance matches the performer's hunger to provide them.
The shadow is the inflation of the ego to the scale of myth — the individual who has confused being significant with being real, and the audience who has agreed to the confusion.
How to actually use it
Create with full commitment, not full ego. The gifts of Neptune in Leo are genuine: access to something luminous through the act of making and sharing. The practice is to let the creative work be larger than the person making it — to serve the light rather than to become it.
When in doubt
Are you creating something — or performing the idea of creating something?