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Astronomy Calculations

Daylight Saving (Summer) Time defaults approximately so verify near its start & end

Common Input

Select Location or enter Latitude, Longitude & Time Zone or enter UK Postcode. If required, change Date. Verify Daylight Saving. Calculation is automatic.
Location Latitude deg min sec
UK Postcode Longitude deg min sec
Daylight Saving hr Time Zone UTC hrs
Date      
   

NOAA Sunrise - Sunset

Website NOAA emblem Uses routines from Astronomical Algorithms by Jean Meeus
Local Time UTC (GMT) Local Time UTC (GMT)
Apparent Sunrise    Apparent Sunset   
Solar Noon Length of Day hrs : min
Equation of Time minutes Solar Declination degrees
 

Keith Burnett Sun & Moon

Website
Uses routines from Astronomy on the Computer by Montenbruck & Pfleger
Local Time UTC (GMT) Local Time UTC (GMT)
Apparent Sunrise Apparent Sunset
Civil Twilight Begins Civil Twilight Ends
Apparent Moonrise Apparent Moonset
 

Peter Hayes Moon

Website Moon phase Uses routines from Astronomical Algorithms by Jean Meeus
Local Time UTC (GMT) Local Time UTC (GMT)
Apparent Moonrise Apparent Moonset
Moon Phase degrees (at 12:00 UTC/GMT) illuminated
 

Stargazing Moon Rise & Set

Website MAS logo Uses routines from Sky & Telescope, July 1989
Local Time UTC (GMT) Local Time UTC (GMT)
Apparent Moonrise Apparent Moonset
Azimuth at Moonrise degrees Azimuth at Moonset degrees
 

US Naval Observatory

Website USNO logo Submits to USNO API and displays data returned
Local Time UTC (GMT) Local Time UTC (GMT)
Apparent Sunrise Apparent Sunset
Civil Twilight Begins Civil Twilight Ends
Sun Upper Transit Sun Lower Transit
Apparent Moonrise Apparent Moonset
Moon Upper Transit illuminated
Current Phase