Each band shows the days of the month on which that condition held. Days are read at 12:00 UTC. The bands carry no favourable or adverse colour, deliberately: events falling more often inside a window is not good news.
Tested condition
Within 18 days either side of an eclipse
1–30 April 1977
In force on 30 of the month's 30 days.
What already happened while this same condition held — counted across the whole record:
Tested against: geophysical events, political events, market events. Categories this condition was not tested against are left out rather than shown as a zero; that restriction is this platform's stated configuration, not a statement of the texts.
Classical basis. Proximity to an eclipse season — the luminaries near the nodal axis. The eighteen-day span is Horā’s stated convention.
Tested condition
Within 14 days after an eclipse
4–30 April 1977
In force on 27 of the month's 30 days.
What already happened while this same condition held — counted across the whole record:
Tested against: geophysical events, political events, market events. Categories this condition was not tested against are left out rather than shown as a zero; that restriction is this platform's stated configuration, not a statement of the texts.
Classical basis. Bṛhat Saṁhitā, the eclipse chapters: effects are said to follow an eclipse. The fourteen-day window is Horā’s stated convention, not the text’s number — the text gives no count of days.
Eclipse
Lunar eclipse
4 April 1977
4 April 1977, maximum at 04:18 UTC.
Not tested by the record
None of the seven tested conditions is keyed to this event on its own, so the record offers no count for it. It is listed because it is a fact of this month's sky, and no number is attached to it. The tested window an eclipse opens appears above as its own band, and the counts are given there.
Classical basis. The eclipse maximum comes from the same astronomical routine this platform's eclipse catalogue was built with. The time is UTC.
Station
Śani turns direct
11 April 1977
11 April 1977 — the change of direction is first seen at 12:00 UTC on this day.
Not tested by the record
None of the seven tested conditions is keyed to this event on its own, so the record offers no count for it. It is listed because it is a fact of this month's sky, and no number is attached to it.
Classical basis. A station is read from the change of sign of the body's speed, sampled at 12:00 UTC each day. No time finer than the day is computed.
Eclipse
Solar eclipse
18 April 1977
18 April 1977, maximum at 10:31 UTC.
Not tested by the record
None of the seven tested conditions is keyed to this event on its own, so the record offers no count for it. It is listed because it is a fact of this month's sky, and no number is attached to it. The tested window an eclipse opens appears above as its own band, and the counts are given there.
Classical basis. The eclipse maximum comes from the same astronomical routine this platform's eclipse catalogue was built with. The time is UTC.
Ingress
Maṅgala enters Mīna
19 April 1977
19 April 1977 — first found in the new rāśi at 12:00 UTC on this day.
Not tested by the record
None of the seven tested conditions is keyed to this event on its own, so the record offers no count for it. It is listed because it is a fact of this month's sky, and no number is attached to it.
Classical basis. An ingress is the crossing of a sidereal (Lāhirī) rāśi boundary, sampled at 12:00 UTC each day. Only Maṅgala, Guru, Śani and Rāhu are shown; Budha and Śukra change sign every few weeks and no tested condition is keyed to their ingress.
Tested condition
Budha retrograde or combust
20–30 April 1977
In force on 11 of the month's 30 days.
What already happened while this same condition held — counted across the whole record:
Tested against: market events. Categories this condition was not tested against are left out rather than shown as a zero; that restriction is this platform's stated configuration, not a statement of the texts.
Classical basis. The price (argha) and motion chapters of the Bṛhat Saṁhitā link anomalous motion of the significator of trade to disturbance in prices. Retrogression and a 12° combustion orb are Horā’s stated operationalisation.
Station
Budha turns retrograde
20 April 1977
20 April 1977 — the change of direction is first seen at 12:00 UTC on this day.
Not tested by the record
None of the seven tested conditions is keyed to this event on its own, so the record offers no count for it. It is listed because it is a fact of this month's sky, and no number is attached to it.
Classical basis. A station is read from the change of sign of the body's speed, sampled at 12:00 UTC each day. No time finer than the day is computed.
Station
Śukra turns direct
27 April 1977
27 April 1977 — the change of direction is first seen at 12:00 UTC on this day.
Not tested by the record
None of the seven tested conditions is keyed to this event on its own, so the record offers no count for it. It is listed because it is a fact of this month's sky, and no number is attached to it.
Classical basis. A station is read from the change of sign of the body's speed, sampled at 12:00 UTC each day. No time finer than the day is computed.