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캘린더에 달 모양보고 달구경하러 고고 벗꽃사이에 둥근달이 우왕 넘 이쁘다 ㅎ 왕마음에듬
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Track celestial events like supermoons, moon phases, and planet positions with this astronomy calendar. Plan observations, get local sun and moon times, and explore detailed sky data.
✓Supermoon calendar with long-range dates
✓Daily moon phase and illumination tracking
✓Local sun and moon times
✓Planet position comparison
✓Save observation notes and reminders
✓Optional astronomy event alerts
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What's New in hellocetus
1.0.16
July 20, 2026
The Full Moon widget has been added!
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FAQ
What is hellocetus?
hellocetus is an astronomy calendar designed for planning supermoons, following moon phases, checking local sun and moon times, and comparing planet positions. It offers both long-range event browsing and daily sky data.
What types of moon events does hellocetus track?
hellocetus tracks Supermoons, Micromoons, Blue Moons, Black Moons, Harvest Moons, Hunter’s Moons, Blood Moons, Super New Moons, and Micro New Moons. It also includes solar and lunar eclipse dates.
Can I save my observations in hellocetus?
Yes, you can save observation notes, plans, and reminders directly on calendar dates within hellocetus. This helps you keep track of your stargazing activities and plans.
Does hellocetus offer alerts for astronomy events?
hellocetus provides optional alerts one hour before supported astronomy events. You can enable these notifications to ensure you don't miss important celestial occurrences.
What planet views are available in hellocetus?
hellocetus allows you to switch between Local Sky, Earth-centered, and Sun-centered planet views. You can compare various celestial metrics like altitude, azimuth, brightness, and distance.
What devices is hellocetus available on?
hellocetus is available on iPhone and iPod devices. It is designed for iOS users interested in astronomy.
How often is hellocetus updated?
The latest version of hellocetus is 1.0.16, last updated on July 20, 2026. This indicates regular updates to improve functionality and add new features.
Is hellocetus free to use?
hellocetus is free to download and use, but it includes advertising. An optional Premium subscription is available for a monthly, yearly, or lifetime fee, which removes ads and unlocks the Home Screen full moon widget.