Moon Phase Software

Moon tools and calendars

Export and integrate
Observe the Moon
Keep it on your device
Personal dates and calendars
Explore lunar geometry

Moon distance and apparent size for an exact time

At 2026-10-31 01:26 (UTC), the Moon is 367,402 km from Earth's centre.

Enter a local civil date, 24-hour time, and IANA time zone to calculate the center-to-center Earth–Moon distance, apparent angular diameter, sub-Earth libration, and the previous and next perigee and apogee.

Geometry input

Use a named IANA time zone so historical clock rules are applied. The default is UTC.

Earth and Moon distance diagram on an astronomy workbench

Geocentric output

Calculated Moon geometry

2026-10-31T01:26+00:00[UTC] · UTC

Earth–Moon center distance

367,402 km

32.51 arcminutes apparent diameter · 0.5419°

Libration longitude
+2.96°
Libration latitude
−4.43°
UTC instant

Distance through 2026-10

Daily Earth-centre distances at local noon in UTC; 364,438–404,504 km. Your surface location changes topocentric distance by up to about one Earth radius.

404,504 km364,438 km2026-10-012026-10-31

Next perigee and apogee

EventLocal timeDetails
Apogee13 November 2026 at 17:50 UTC405608 km
Perigee25 November 2026 at 21:02 UTC359335 km

Annual distance tables: 2026 perigee and apogee · 2027 perigee and apogee

Reading the instrument

Four parts of the geometry

Every value uses Earth's centre as the reference point. That keeps the orbital measurement stable before any observer location is added.

01

Center distance

The straight-line distance between the centres of Earth and Moon.

02

Angular diameter

The modeled width of the lunar disc from Earth's centre; it generally grows as distance falls.

03

Sub-Earth libration

Longitude and latitude describing the apparent back-and-forth view of the lunar surface.

04

Perigee and apogee

Local distance minimum and maximum events searched on both sides of the selected instant.