Interactive astronomy
Venus Cycle
Explorer
Trace the rhythm that links five 584-day Venus cycles with eight 365-day solar years in a 2,920-day calendar pattern.
01 Set a reference
Move through 2,920 days
Choose an arbitrary starting date, then move through the combined calendar model. This is a cycle demonstration—not a sky-position forecast.
02 Read the cycle
Two measures, one span
Five cycles meet eight years
Both lanes use the Maya calendar model. Each Venus segment is 584 days; each solar-year segment is 365 days.
Selected cycle
Four canonical intervals
The Dresden Codex table divides its 584-day Venus count into four conventional intervals. Dates below are calculated from your reference, not predicted observations.
| Interval | Length | Calculated dates |
|---|
Calendar model & astronomy
Exact pattern, approximate sky
Five 584-day Venus counts and eight 365-day Haab years meet exactly.
Five mean synodic periods are about 2,919.6 days; eight tropical years are about 2,921.94 days.
Interpret carefully. The explorer visualizes numerical cycles recorded in Maya sources. It does not reconstruct a particular ancient observation, assign a personal meaning, or predict whether Venus is visible from your location.
Evidence & context