Choghadiya divides the day into eight windows and the night into eight more, each named after the planet that rules it: Amrit, Shubh and Labh are auspicious, Char is neutral, and Rog, Kaal and Udveg are avoided. It is the quickest way to pick a short window for travel, a purchase or an everyday task, because it needs only your city and the date.
Each half of the day runs through these seven names in its own fixed cyclic order and then repeats the first name in the eighth slot. That is how seven names fill sixteen windows, and why a day Choghadiya list always opens and closes with the same one.
The day Choghadiya divides sunrise to sunset into eight equal parts, and the night Choghadiya divides sunset to the next sunrise into eight more. The two halves are almost never the same length: on a twelve-hour day each slot is 90 minutes, but in December a north Indian day slot may be about 80 minutes while the night slot is about 100.
Which name lands on the first slot is set by the weekday. The day sequence begins with Udveg on Sunday, Amrit on Monday, Rog on Tuesday, Labh on Wednesday, Shubh on Thursday, Char on Friday and Kaal on Saturday, and then runs through the seven in order. The night sequence starts from a different name on each weekday, which is why a good night window is never simply the good day window plus twelve hours.
Choghadiya and the day-doshas are two independent grids over the same daylight. Rahu Kaal, Yamaganda and Gulika Kaal each occupy one of eight parts, and Choghadiya labels all eight, so an Amrit or Shubh window can overlap Rahu Kaal on some weekdays. Where they clash, the tradition treats the exclusion window as the stronger claim.
Abhijit is cut differently again, as the eighth of fifteen parts rather than one of eight, so it straddles two Choghadiya slots. A practical order of checks is: rule out Rahu Kaal, Yamaganda, Gulika and the day's Dur-Muhurtam first, then pick the best Amrit, Shubh or Labh window remaining.
Choghadiya uses no birth details. It is a property of the date and the place, so everyone in your city shares the same sixteen windows on the same day, and the tool asks for nothing else. When the day has no real sunrise or sunset, at extreme latitudes near the solstice, the windows cannot be defined and the app says so rather than printing an invented grid.
It also carries no verdict about a specific undertaking. The labels above are the traditional character of each window, not an assessment of your plan, your chart or your counterparty. For a time chosen against a horoscope, or for a wedding or house entrance, use the dedicated muhurat tools.
Amrit, Shubh and Labh are the auspicious ones and are preferred for new or important work. Char is neutral and is specifically favoured for travel. Rog, Kaal and Udveg are avoided for anything begun fresh.
Day Choghadiya divides sunrise to sunset into eight equal parts; night Choghadiya divides sunset to the next sunrise into eight. The two halves differ in length on most dates, and each weekday starts its day and night sequences from different names, so this tool computes them separately for your city.
One eighth of the half-day it belongs to. On a twelve-hour day and a twelve-hour night each window is 90 minutes, but as the seasons shift the day windows and night windows drift apart in length, often to about 80 and 100 minutes.
The exclusion window is treated as the stronger claim, so an Amrit or Shubh slot that overlaps Rahu Kaal, Yamaganda, Gulika Kaal or the day's Dur-Muhurtam is not used for a fresh start. Rule those out first, then choose among the auspicious windows that remain.
No. Choghadiya needs only a date and a city, and everyone in that city shares the same sixteen windows that day. It is an almanac calculation, not a horoscope reading.
For educational purposes. Astrological interpretations are traditional and not a substitute for professional advice.