Cosmic Diary

Birth details

Name (optional)

Date of birth

Time of birth (local)

Birth place (type to search)

Latitude (°) North +, South −

Longitude (°) East +, West −

UTC offset (h) e.g. 5.5 (IST), 5.8909 (Calcutta LMT), −5 (EST), 0 (UTC)

Chart settings

Ayanamsa

Western houses

Lunar node

Transit date

Time

Life events scan (Sade Sati, returns, key aspects)

From

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Include Western chart Include Vedic chart Include current Dasha Include current transits

Diary

Note down your dreams, omens, and life events. Saved automatically to this page in your browser — no server involved.

About this tool & accuracy notes

This is a self-contained offline astrology calculator. All planetary positions are computed locally using truncated VSOP87 series (planets), a Meeus-style lunar theory (Moon), and Lahiri / Pushya Paksha ayanamsa formulas. No network calls are made after the file is loaded.

Range: 369 CE – 3369 CE (3000-year window, centered roughly on modern era)
Accuracy: Planet longitudes ≲ 1′ from ~1000 CE onward; degrades to a few arcminutes at the far extremes (369 CE, 3369 CE). Sun/Moon stays within arc-seconds. Fine for all astrological use.
Timezone: You must enter the correct UTC offset for the birth location & era (including DST if applicable). For pre-1970 births in the US/Europe, double-check historical DST.
Ayanamsas: Lahiri (Chitrapaksha, official Indian) uses 23°51′11″ at J2000 inception with secular drift. Pushya Paksha uses the Pushyamī nakshatra midpoint.
Dasha: Vimshottari (120-year cycle) based on Moon's nakshatra.
Verify critical cases against Swiss Ephemeris-based tools (e.g. Jagannatha Hora, Astrodienst).

Knowledge links

Recommended external reading/viewing. URLs shown in full so you can inspect before clicking.

Omens — https://bit.ly/3NlKyM0
Seed — https://www.youtube.com/watch?v=EKoCH8HatvE
Kalki — https://bit.ly/4rpLNg7

File integrity & tamper check

This page contains a SHA-256 checksum of its own embedded JavaScript. When the page loads, your browser recomputes the hash and verifies it matches. Any modification to the core logic will break the check.

Checking…

How to verify independently & what this detects

Automatic self-check (above): The browser runs crypto.subtle.digest('SHA-256', ...) over the embedded code and compares to a hash baked in at build time. ✓ means the code matches what was built; ⚠ means it has been modified since.

Independent verification (recommended): Note the hash shown above the first time you receive this file. Whenever you re-open or receive a copy from someone else, check that the hash displayed matches your original record. A tampered file with updated code and updated hash will still pass its self-check, but the hash value itself will differ from your record — which is exactly how tampering becomes visible.

External command-line verification of the whole file (strongest check; requires a known-good reference hash):

Linux: sha256sum Cosmic_Diary.html
macOS: shasum -a 256 Cosmic_Diary.html
Windows (PowerShell): Get-FileHash Cosmic_Diary.html -Algorithm SHA256