The Transit Calendar scores every day of a month for you on a scale of 1 to 5, combining the gochara of each graha counted from your natal Moon with the Tara Bala of the transiting Moon, the Sade Sati house band for Saturn, and your Sarvashtakavarga bindus for the signs being transited. Green days are supportive, grey neutral, red challenging.
First, gochara: every graha's transit is judged by which house it occupies counted from your natal Moon, using the favourable-house sets of Phaladeepika 26.2. Second, Tara Bala, the nine-fold reckoning of the transiting Moon's nakshatra from your birth star. Third, the Sade Sati band, tracked as a separate labelled layer when Saturn is in the 12th, 1st or 2nd from your Moon. Fourth, the Sarvashtakavarga bindu count of the sign each graha is transiting.
All four are computed from your own chart, which is why the calendar cannot be shared: two people born on the same day in different years will have different natal Moons and therefore different colours on the same date. This is a personal transit reading, not a public almanac.
The house sets are classical and cited. The numeric weight attached to each of them is not, and AstroZivi says so plainly: no classical text assigns a number to a gochara verdict, so the 1 to 5 score is a product affordance for ranking days against each other, not a phala any source states.
Read it that way and it is genuinely useful: within one month, the days it puts at 4 and 5 are the ones where the largest number of cited factors line up favourably, and the 1s and 2s are where they do not. Read it as a prediction and you are reading something no text supports. The page keeps that distinction visible rather than hiding it behind a colour.
A calendar month usually overlaps two solar months, because the Sun ingresses into a new sign roughly every 30.4 days and a 28 to 31 day window therefore contains at most one boundary. The tool reports the solar month each day belongs to alongside the daily rating, so a Sankranti falling mid-month is visible rather than silently smoothed over.
For those solar bands the page reports the house to watch rather than a blocked or unblocked verdict. The reason is honest arithmetic: the obstruction that would settle such a verdict is a fact about an instant, and the other grahas move through the relevant house across a month-long band, so a single flag on the band would be wrong for most of it. The instant-level reading belongs on the chart's transit tab.
Four cited layers are combined: each graha's gochara counted from your natal Moon using the favourable-house sets of Phaladeepika 26.2, the Tara Bala of the transiting Moon from your birth star, the Sade Sati band when Saturn is in the 12th, 1st or 2nd from your Moon, and your Sarvashtakavarga bindus for the signs being transited.
Green marks excellent and good days, grey neutral, and red challenging or difficult ones. The colour is a rendering of the 1 to 5 score, which ranks the days of a month against each other rather than making an absolute claim about any of them.
The house sets behind it are, and they are cited to Phaladeepika 26.2. The numeric weighting is not: no classical text assigns a number to a gochara verdict, so the score is an editorial ranking device that AstroZivi labels as such rather than presenting as a phala.
Yes. Every layer is counted from your natal Moon and your own Sarvashtakavarga, so the calendar is specific to your chart. A calendar computed for someone else will colour the same dates differently.
Because the Sun changes sign roughly every 30.4 days, so most calendar months contain one Sankranti and therefore parts of two solar months. Each day is labelled with the solar month it belongs to so that the boundary is visible.
For educational purposes. Astrological interpretations are traditional and not a substitute for professional advice.