ctu-time 1.0.0
CTU - Calculated Time Uncoordinated. Hyperlocal. No timezones. No DST. For Humans.
License: MIT
Requires Python: >=3.9

# 🌞 CTU Time: Chronobiological Timekeeping Revolution

**Human-Centric Time Anchored to Solar Reality**
*Eradicates DST Harm • Aligns with Body Clocks • Solar-Truth Coordination*

[![EU DST Solution](https://img.shields.io/badge/Ends-DST%20Productivity%20Loss-green)]()
[![Chrono-Biological](https://img.shields.io/badge/Aligns-With%20Circadian%20Rhythm-blue)]()

---
## ⚡ Why This Solves Real Problems

### The DST Body Count
Clock shifts aren't just annoying — they're deadly.

- Increase of Correlation of Daylight Saving Time Transitions and Risk of Heart Attack ([PubMed](https://pubmed.ncbi.nlm.nih.gov/38888468/))
- A Chronobiological Evaluation of the Acute Effects of
Daylight Saving Time on Traffic Accident Risk ([Current Biology](https://embargoed.www.cell.com/current-biology/pdf/S0960-9822%2819%2931678-1.pdf))



---

## 🧠 What Is CTU?

**CTU (Calculated Time Uncoordinated)** is a 24-hour timekeeping system:
- **Anchored to the sun** — 12:00 is always solar noon.
- **Midnight is always 00:00**, no matter the solar drift.
- **Only the final hour (23:00–00:00)** is dynamically stretched/compressed to keep the system aligned with Earth's rotation.


### 🕰️ Example: Real-Time Reasoning

```python
# CTU-based school logic
if 8 <= ctu_time.hour < 12:
    engage_students_in_high_focus_tasks()
elif 12 <= ctu_time.hour < 15:
    encourage_rest_and_light_activity()
```

---

## 💡 CTU vs Artificial Time

| **Human Need**         | **Legacy Systems**               | **CTU Advantage**                              |
|------------------------|----------------------------------|------------------------------------------------|
| Jet Lag Recovery       | Timezones misaligned with sun   | “Arrival: 16:00 CTU” = True local solar time   |
| Night Shift Health     | 22:00–06:00 varies by light      | 20:00–04:00 CTU = Stable solar night context   |
| Remote Work Sync       | “15:00 UTC” lacks meaning        | “15:00 UTC (09:00 CTU SF)” = Solar-anchored    |

---

## 🌍 CTU’s Vision for Daily Life

### 1. Eliminate DST Trauma
- No spring/fall time shifts — the midnight hour adapts silently.
- Natural alignment = **+24 mins sleep/year** from unbroken circadian rhythm.

### 2. Chrono-Biological Standards

```python
# Example: CTU-aligned treatment delivery
if is_optimal_ctu_window(patient, ctu_time.hour):
    deliver_chemo()  # Matches cellular repair cycles
```

- **Sports recovery, learning, productivity** — all benefit from solar-truth anchoring.

### 3. A Universal Solar Context
- “Available 14:00–18:00 my CTU” — *means* something anywhere on Earth in relation to the sun.
- **Streetlight automation**: Triggers at 18:00 CTU, not an arbitrary clock hour - well, the exact time would still be arbitrary, but now you can actually imagine the position of the sun at that time. Plus, if you know the exact dawn for that day, you can easily figure out the corresponding dusk and vice versa as midnight *really is* the middle of the night. And the length of the night is *actually* double the time of dawn - easy!

---

## 🔧 How It Works (Technical Summary)

- Every CTU day is centered around **solar noon**.
- The **final hour of the day (23:00–00:00)** dynamically absorbs the small fluctuations in the solar day (±30s typical).
- This keeps **12:00:00 CTU = True Solar Noon**, globally, as well as **0:00:00 CTU = True Solar Midnight**
- Conversions to/from UTC are precise and **roundtrip-safe to within ±1μs** for all but ~30 edge seconds/year (which fallback smoothly to ~1 sec error).
---

## 🧪 What CTU Is and Isn’t

### ✅ CTU Guarantees:
- 12:00 is always solar noon (to within astronomical precision).
- Midnight is always 00:00.
- Fully UTC-compatible.
- Resilient to leap seconds and drift.

### 🚫 CTU Doesn’t:
- Replace UTC or unix timestamps in tech and science.
- Predict dawn/dusk (requires latitude input).
- Solve sleep disorders (we still need to fix light pollution).

---

## 🧭 Ready to Rethink Time?

CTU isn’t just a clock — it’s a return to natural time. A system that’s:

- **Biologically attuned**
- **Technically precise**
- **Human-centered**
---
TLDR: Timezones and DST suck. There has to be a better way! UTC & CTU are the way to go. 

***"Victory belongs to those who command the day. Synchronize your steps to the sun and meet fate on your own schedule." — Sun Tzu, probably***