Longitude tells you what time it is. Latitude tells you how to use that time. MSI-LAT-TIME adds a second axis for human schedules, health, and energy.
MSI-LAT-TIME expresses time as latitude-dependent bands derived from solar elevation and day length. These bands are computed from MSI-TIME and MSI-ORI, ensuring consistency with physical Earth orientation. The result is a stable, computable mapping between clock time, solar exposure, and lived human time.
MSI-LAT-TIME does not replace legal time zones in v1.0. It overlays guidance that reflects daylight patterns and circadian reality, enabling systems to recommend healthier schedules across latitudes.
Latitude Time is not a replacement for atomic or civil time standards. It is a derived temporal layer that visualizes how time is experienced differently across latitudes due to Earth’s tilt and orbital geometry. By anchoring time to solar position rather than clock convention, MSI-LAT-TIME provides an intuitive framework for understanding daylight cycles, seasonal variation, and human circadian exposure.
Each latitude band (LTB) encodes shared daylight characteristics. A Human Phase Offset (HPO) can be recommended without changing the clock itself.
| Band | Latitude Range | Default HPO |
|---|---|---|
| LTB-0 | 0°–15° | 0 hours |
| LTB-1 | 15°–30° | −1 hour |
| LTB-2 | 30°–50° | 0 hours |
| LTB-3 | 50°–66.56° | +1 winter / 0 summer |
| LTB-4 | 66.56°–90° | +2 winter / −1 to 0 summer |
This mini-app will let users input a latitude and see the recommended phase offset, example workday windows, and seasonal guidance. (Placeholder here — implementation comes later.)
MSI-LAT-TIME enables systems to reason about daylight reality without changing legal time. It’s designed for scheduling, public health, energy grids, and polar operations.
Latitude Time is not a replacement for atomic or civil time standards. It is a derived temporal layer that visualizes how time is experienced differently across latitudes due to Earth’s tilt and orbital geometry. By anchoring time to solar position rather than clock convention, MSI-LAT-TIME provides an intuitive framework for understanding daylight cycles, seasonal variation, and human circadian exposure.
