brightdate 0.1.0

BrightDate — decimal-SI days since J2000.0 (Python reference slice)

brightdate-python

Python reference slice for BrightDate — decimal SI days since the J2000.0 UTC label (946_727_935_816 Unix ms → BD 0). Full semantics: specification. Multi-language reference: @brightchain/brightdate.

Repository: Digital-Defiance/brightdate-python

Install

pip install brightdate

BrightVision dev (submodule):

git submodule update --init brightdate-python
pip install -e brightdate-python

Example

from brightdate import J2000_UNIX_MS, bd_from_unix_ms, format_bd_scalar, from_iso, now, to_iso

assert J2000_UNIX_MS == 946_727_935_816
assert abs(from_iso("2000-01-01T11:58:55.816Z")) < 1e-12
print(format_bd_scalar(now()))
print(to_iso(0.0))  # 2000-01-01T11:58:55.816Z

v0.1 scope

Included	Planned (npm parity)
Epoch constants, Unix↔BD, now()	Leap-second table, TAI↔UTC
format_bd_scalar, millidays, ETC	BrightInstant, archival types
parse_bd_bounds (btime stderr)	Serialization, astronomy helpers
from_iso / to_iso (UTC label)	Leap-second :60 in to_iso

Tests

pip install -e ".[dev]"
pytest -q

Publish

See PUBLISH.md.

Consumers

• BrightVision — bright_vision_core, Test Lab, btime / bgpucap timing
• brightdate-rust — CLI btime