Your Cosmic Harmony
Enter a birth date to get three indices describing the electromagnetic environment in the months before you were born. Then compare yours with someone else's.
Enter another birth date to see how closely your skies match.
Example comparison: born 15 March 1991.
Pregnancy weeks are counted the usual way, from about two weeks before conception, so the record starts near week 2.
Smoothed sunspot number. Numbers mark each cycle's peak.
Estimated strength in the months before you were born. 1× is the long-term average.
Kp runs 0 to 9 every three hours and measures how disturbed the field is worldwide. NOAA calls Kp 5 a minor storm (G1) and Kp 9 an extreme one (G5).
Ap is the daily average on a linear scale. Quiet days sit under 10. The March 1989 storm reached 246.
Dst tracks the ring current in nanotesla. It drops during storms: below −50 nT is moderate, below −100 nT is intense, and below −250 nT is a superstorm.
Schumann resonance is Earth's natural electromagnetic hum at about 7.8 Hz, set ringing by lightning between the ground and the ionosphere. It is stronger when more of the world is having thunderstorms, mostly during the northern summer.