501.

The Moon at aphelion The Moon recedes to its orbit's furthest point from the Sun, which happens each month around the time of full moon. Sun, 16 Feb 2014 at 17:02 EDT (3,804 days ago) in Leo

502.

Full Moon The Moon reaches full phase and is visible for much of the night. Fri, 14 Feb 2014 at 18:52 EDT (3,806 days ago) in Leo

503.

The Moon at apogee The Moon recedes to its orbit's furthest point from the Earth, making it appear fractionally smaller than at other times of the month. Wed, 12 Feb 2014 at 00:09 EDT (3,808 days ago) in Gemini

504.

Moon at First Quarter The Moon reaches first quarter phase – appearing high in the sky at sunset and setting in the west at around midnight. Thu, 06 Feb 2014 at 14:22 EDT (3,814 days ago) in Aries

505.

New Moon The Moon disappears into the Sun's glare for a few days. Thu, 30 Jan 2014 at 16:39 EDT (3,821 days ago) in Aquarius

506.

The Moon at perigee The Moon makes its monthly closest approach to the Earth, making it appear fractionally larger than at other times of the month. Thu, 30 Jan 2014 at 04:58 EDT (3,821 days ago) in Capricornus

507.

The Moon at perihelion The Moon passes its orbit's closest point to the Sun, which happens each month around the time of new moon. Wed, 29 Jan 2014 at 18:18 EDT (3,822 days ago) in Sagittarius

508.

Moon at Last Quarter The Moon reaches last quarter phase – rising in the east at around midnight and appearing high in the sky by sunrise. Fri, 24 Jan 2014 at 00:19 EDT (3,827 days ago) in Virgo

509.

The Moon at aphelion The Moon recedes to its orbit's furthest point from the Sun, which happens each month around the time of full moon. Thu, 16 Jan 2014 at 15:51 EDT (3,835 days ago) in Cancer

510.

Full Moon The Moon reaches full phase and is visible for much of the night. Wed, 15 Jan 2014 at 23:52 EDT (3,835 days ago) in Gemini

511.

The Moon at apogee The Moon recedes to its orbit's furthest point from the Earth, making it appear fractionally smaller than at other times of the month. Wed, 15 Jan 2014 at 20:52 EDT (3,836 days ago) in Gemini

512.

Moon at First Quarter The Moon reaches first quarter phase – appearing high in the sky at sunset and setting in the west at around midnight. Tue, 07 Jan 2014 at 22:39 EDT (3,844 days ago) in Pisces

513.

The Earth at perihelion The Earth reaches its closest point to the Sun. Sat, 04 Jan 2014 at 06:58 EDT (3,847 days ago) in Pisces

514.

The Moon at perigee The Moon makes its monthly closest approach to the Earth, making it appear fractionally larger than at other times of the month. Wed, 01 Jan 2014 at 15:59 EDT (3,850 days ago) in Sagittarius

515.

The Moon at perihelion The Moon passes its orbit's closest point to the Sun, which happens each month around the time of new moon. Wed, 01 Jan 2014 at 06:54 EDT (3,850 days ago) in Sagittarius

516.

New Moon The Moon disappears into the Sun's glare for a few days. Wed, 01 Jan 2014 at 06:15 EDT (3,850 days ago) in Sagittarius

517.

Moon at Last Quarter The Moon reaches last quarter phase – rising in the east at around midnight and appearing high in the sky by sunrise. Wed, 25 Dec 2013 at 08:48 EDT (3,857 days ago) in Virgo

518.

December solstice 21 December will be the shortest day of 2013 in the northern hemisphere. Sat, 21 Dec 2013 at 12:14 EDT (3,861 days ago) in Sagittarius

519.

The Moon at apogee The Moon recedes to its orbit's furthest point from the Earth, making it appear fractionally smaller than at other times of the month. Thu, 19 Dec 2013 at 18:48 EDT (3,863 days ago) in Gemini

520.

Full Moon The Moon reaches full phase and is visible for much of the night. Tue, 17 Dec 2013 at 04:28 EDT (3,865 days ago) in Taurus