Sidera Planner New overview showing timing systems, calendar scores, top days, and day log

7 Ways to Choose a Good Day

You have felt this before. A day you timed carefully turned out flat, and a day you barely thought about was the best one in the month. The launch that underperformed despite the good Moon. The contract that closed smoothly on a date you almost cancelled. The conversation you rescheduled for a week, then had anyway, and it was fine. That gap between what the timing system said and what you lived is not evidence that astrology does not work....

June 27, 2026 · Updated June 27, 2026 · 20 min · Sidera
Sidera Chinese Ze Ri timing screen with calendar, selected day details, and top days

Chinese Almanac Good Days: What Ze Ri Date Selection Actually Feels Like

Most people searching for “Chinese almanac good days” are not really looking for a lucky number. They are trying to choose a date for something that matters enough to feel precarious: a conversation they have been putting off for months, a commitment that feels permanent, a first step after something that ended badly. The question is not usually “is Friday the 13th unlucky?” It is closer to: “I need to do this thing and I want to know if the timing is working with me or against me....

June 27, 2026 · Updated June 27, 2026 · 18 min · Sidera
Sidera Jewish Halachic timing screen with sunset-aware calendar markers and day details

Lunar Calendar Timing After Sunset

Not every calendar day begins at midnight. That sounds obvious until you try to build a planning app. A civil date can say Saturday, June 27, but a Hebrew calendar context may have shifted at sunset. A Hijri context can also depend on sunset, local convention, and whether a community follows observation or a fixed civil calculation. Sidera’s experimental Planner New includes two systems that force the app to respect this: Jewish / Halachic timing and Islamic lunar timing....

June 27, 2026 · Updated June 27, 2026 · 8 min · Sidera
Sidera Jyotish Muhurta screen with calendar, selected day panel, top days, and day log

Muhurta Calculator: Vedic Timing

Muhurta is the Vedic art of choosing a supportive moment to begin. A wedding, business opening, first day at work, public launch, contract, move, or ritual can all be treated as a beginning with a chart of its own. Sidera’s experimental Planner New turns that idea into a day-level Muhurta calendar. The important phrase is day-level. A serious traditional Muhurta can go much deeper than a 1-10 score. It may consider tithi, nakshatra, weekday, yoga, karana, lagna, planetary strength, local time, and the exact purpose of the action....

June 27, 2026 · Updated June 27, 2026 · 8 min · Sidera
Sidera Rokuyo calendar screen showing six-day Japanese timing labels and top days

Rokuyo Calendar: Taian to Butsumetsu

Rokuyo is one of the simplest timing systems in Sidera’s experimental Planner New, and that is why it is useful. It does not ask you to read a birth chart. It does not ask you to compare transits. It gives each date one of six Japanese calendar labels, then lets you decide whether that cultural timing marker matters for your plan. The labels are familiar in Japan: Taian, Shakku, Sensho, Tomobiki, Sakimake, and Butsumetsu....

June 27, 2026 · Updated June 27, 2026 · 8 min · Sidera