OmniDate

OmniDate turns every date into a complete time dashboard.

Instantly compare the same day across many calendars: Gregorian, Julian, French Republican, Chinese, Hebrew, Islamic, Persian, Buddhist, Japanese and ISO 8601.

Also explore:

• the date’s position within the year;
• sunrise and sunset, solar noon, day length and twilight;
• Moon phases, illumination, distance, moonrise and moonset;
• upcoming astronomical events including seasons, lunar phases, perigees, apogees, supermoons, eclipses, meteor showers, planetary configurations, Earth orbit events and notable comet passages;
• historical events associated with the selected date, with categories, descriptions and sources;
• name days, traditional sayings and international observances when available;
• astrology and additional calendar information.

OmniDate also lets you explore astronomical phenomena visually. Dedicated maps and visualisations for meteor showers and eclipses help you examine these events across space and time, whether they are in the future or the past.

Historical events can be browsed day by day and opened individually for more details.

Customise the order of dashboard tiles, choose which calendars are displayed, select historical event categories and define the location used for astronomical calculations.

Sharing features make it easy to send information and events that interest you.

OmniDate is designed both for quick reference and for learning, comparing and exploring different ways of understanding a date, a day or an astronomical event.

Available on iPhone and iPad, with widgets and Apple Watch support.