DASA Calculations not working

[VewMet]

from vedastro import *

# Prepare random birth and end times
geolocation = GeoLocation("London, UK", -0.1276, 51.5074)
birth_time = Time("14:25 15/03/1995 +00:00", geolocation)
end_time = Time("14:25 15/03/2095 +00:00", geolocation)

# Print times for verification
print(f"Birth Time: {birth_time}")
print(f"End Time: {end_time}")

# Calculate Dasa at range
result = Calculate.DasaAtRange(
    birth_time,
    birth_time,
    end_time,
    2,      # levels
    1       # precisionHours
)

print("DasaAtRange result:")
print(result)

TRIED this, but it returns NONE. Meaning DasaAtRange not working

Originally posted by @VewMet in #18

[VewMet]

Even on main website, we get this error:
https://api.vedastro.org/api/Calculate/DasaAtRange/Location/Paris/Time/00:00/01/01/2000/+01:00/Location/Paris/Time/00:00/01/01/2001/+01:00/Location/Paris/Time/00:00/01/01/2005/+01:00/Levels/3/PrecisionHours/100/Ayanamsa/RAMAN

The resource you are looking for has been removed, had its name changed, or is temporarily unavailable.

[sengiv]

Hey @VewMet, thanks for the detailed report, and sorry for the confusion! Let me help clear this up. 🙏

The Problem: Incorrect Argument Order

Looking at your code, the issue is that DasaAtRange has a specific argument order that differs from what you used. Here's the correct signature:

Calculate.DasaAtRange(birth_time, start_time, end_time, levels, precision_hours)

In your code, you passed birth_time as both the first and second argument, and your end_time spanned 100 years (1995 to 2095). Calculations spanning 100 years with precisionHours=1 are extremely expensive and will likely time out.

Working Example ✅

Here's a corrected version that should work perfectly:

from vedastro import *
import json

# Set API key (get a free unlimited one at vedastro.org/API.html)
Calculate.SetAPIKey('FreeAPIUser')

# Define location
geolocation = GeoLocation("London, UK", -0.1276, 51.5074)

# Birth time
birth_time = Time("14:25 15/03/1995 +00:00", geolocation)

# Define the range you want Dasa results for (NOT the same as birth_time!)
start_time = Time("00:00 01/01/2024 +00:00", geolocation)
end_time   = Time("00:00 01/01/2030 +00:00", geolocation)

# Calculate Dasa - levels=2 (Mahadasa + Bhukti), precisionHours=100 (good balance of speed vs accuracy)
result = Calculate.DasaAtRange(birth_time, start_time, end_time, 2, 100)

print(json.dumps(result, indent=4))

Key Tips for Success

1. start_time and end_time define the window you want Dasa results for — they are NOT related to the birth time. They represent the date range you're interested in (e.g., "Show me all Dasa periods between 2024 and 2030").

2. Keep the range reasonable — a 5–10 year window is ideal. A 100-year span with precisionHours=1 will be very slow or time out.

3. Use a higher precisionHours — setting it to 100 means accuracy within ~100 hours, which is perfectly fine for Dasa calculations and completes quickly. Setting it to 1 is very slow for large ranges.

4. Set a proper API key — the free tier has rate limits. For fast calculations, get your unlimited API key at vedastro.org/API.html — it's just $1/month and makes a big difference in response time.

About the API URL Error

The direct API URL you tried also has a formatting issue — the DasaAtRange endpoint expects the three Time parameters (birth, start, end) each with their own Location prefix. The URL structure is very specific. The Python library handles all of this for you automatically, so using the Python API (as above) is the recommended approach.

Hope this resolves it! Please give the corrected code a try and let us know how it goes. 😊 Closing this issue but feel free to reopen if you're still hitting problems.