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

Astrology Calendar: Compare 7 Timing Systems in Sidera

Quick answer: An astrology calendar maps dates to timing signals so you can compare realistic options for a specific action. Sidera’s calendar offers seven separate systems: Western, Jyotish, Chinese almanac, Rokuyo, Jewish, Islamic, and Mayan. Western uses tropical calculations; Jyotish uses Lahiri sidereal calculations. The other calendars add cultural, religious, or cycle-based context. Because these systems use different inputs, their labels should not be averaged into one universal “good day” score. None guarantees an outcome or replaces practical readiness. ...

June 27, 2026 · Updated September 8, 2026 · 15 min · Sidera
Sidera Lucky Day Planner Feng Shui Ze Ri monthly calendar grid with Singapore demo data

Chinese Almanac Good Days: Feng Shui Ze Ri

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 September 8, 2026 · 20 min · Sidera
Sidera Lucky Day Planner Jewish Halachic monthly calendar grid with Singapore demo data

Lunar Calendar Timing After Sunset

You text a friend: “drinks at my place, Friday at 7?” They reply within minutes: “that’s Erev Shabbat for us–could we do earlier, or Sunday instead?” You apologize and reschedule. No real harm. But you feel it: the moment when your calendar reality and someone else’s are simply not the same evening. Your phone said Friday. Their experience of Friday evening had already become something else at sundown. This is not a rare glitch. It is a structural feature of how many people move through the world. Hebrew calendar days begin at nightfall. Islamic lunar dates carry religious meaning tied to sunset and lunar month cadence. For millions of people, civil midnight-to-midnight time is not the only time they live by–and almost no planning tool acknowledges the difference. ...

June 27, 2026 · Updated September 8, 2026 · 16 min · Sidera
Sidera Lucky Day Planner Jyotish Muhurta monthly calendar grid with Singapore demo data

Muhurta Calculator: Vedic Timing for Real Decisions

You have two possible start dates in your head. Maybe it is a business launch, a difficult conversation you have been putting off, a first day at something new. Both dates are logistically possible. Both feel slightly off for reasons you cannot fully name. And you are not completely sure if you are picking a date or just picking the feeling of being ready. That is what Muhurta is built for. Not to resolve the fear, but to give the tension a structure. ...

June 27, 2026 · Updated September 8, 2026 · 14 min · Sidera
Sidera Lucky Day Planner Rokuyo monthly calendar grid with Singapore demo data

Rokuyo Calendar: Taian to Butsumetsu

You have two open dates. Both work on paper. The venue is available either way, the guests are free either way, and the budget is the same either way. But one of the dates keeps giving you pause, and you cannot point to a concrete reason. It is not a practical objection. It is something underneath practical. A sense that the date does not match what you are actually trying to do, or what you want the day to feel like. So you look for something external to either confirm the lean you already have, or give you permission to override the feeling and just pick the date that is easier to schedule. ...

June 27, 2026 · Updated September 8, 2026 · 17 min · Sidera