Calculating progressed Moon declinations…
Progressed Moon Declinations Calculator
Secondary Progressions · Natal Data + AtlasDB · Age or Calendar-Date Range
Natal Chart Data
Name / Chart Label
Natal Date
Natal Time
City / Atlas Lookup
Lookup
Selected Location
Latitude
Longitude
Timezone Offset
Timezone Name
The IANA timezone name is used first, so the natal UTC conversion honors the historical DST rule for the entered birth date/time. The numeric offset is a fallback.
Progressed Time Span
By Age
By Calendar Date
Start Age
End Age
Example: 18 to 30 charts only ages 18 through 30. Decimal ages are accepted.
Start Date
End Date
Calendar dates are converted to exact secondary-progressed ages using the natal timestamp and the same 365.25-day progression key as the original calculator.
Chart Resolution
4 samples/year
6 samples/year (original)
12 samples/year
24 samples/year
52 samples/year
Six samples per year matches the old graph’s effective four-progressed-hour sampling. Higher resolutions give more precise turning points and boundary crossings.
Calculation method
Secondary progression is calculated as
1 ephemeris day = 1 year of life
. The calculator determines the progressed Julian Day from the natal UT timestamp and requests the Moon’s declination directly from Swiss Ephemeris.
Calculate Progressed Moon Declinations