For any date there is a unique configuration of those "hands" since no planetary period is exactly commensurate with another.

She was emphatic, for instance, that both Time Warner and Go Network sign the transition contracts before March 10, when Mercury went retrograde - a notoriously difficult planetary period.

The origins of the almanac can be connected to ancient Babylonian astronomy, when tables of planetary periods were produced in order to predict lunar and planetary phenomena.

The lord of each nakshatra determines the planetary period known as the dasha, which is considered of major importance in forecasting the life path of the individual in Hindu astrology.

I'm seeing an apparent antimatter engine burn near an Earthlike planet orbiting some seventy million kilometers from the sun-- planetary period, some two hundred and twenty-five days.

Results of planetary periods (dashas) and sub-periods (antra-dashas) vary in accordance with the particular location of those bhava-lords in the Navamsa-chart.

And then there's the local planetary rotational period, which is fast and makes things more confusing.

Each mahadasha is also subdivided into planetary periods called Bhukti, which run in the same order as the mahadashas, and with the same proportional length.

Cordiality has a known planetary period.

Another element in Aryabhata's model, the śīghrocca, the basic planetary period in relation to the Sun, is seen by some historians as a sign of an underlying heliocentric model.