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Sky Chart For The Month of April, 2021


ASTRONOMICAL BULLETIN FOR APRIL 2021

The Moon

 First Quarter occurs on 20st  at h. 12–29 I.S.T

 Full Moon occurs on   27th   at h. 09–01 I.S.T

Last Quarter occurs on 4th at h. 15–32 I.S.T

 New Moon occurs on 12rd at h. 08–01 I.S.T

The Lunar Crescent becomes first visible after the New Moon day in the evening of 13th.

The Moon is at Apogee or farthest from the Earth on 14th. The Moon is at Perigee or nearest to the Earth on 27st.

 

The Moon passes about 4º south of Saturn on 6th, about 4½º south of Jupiter on 7th,  about 4½º south of Neptune on 9th, about 3º south of Mercury on 11th, about 3º south of Venus on 12th,  about 2½ º south of Uranus  on 13th and close to Mars on 17th .


                                                                                                                                                                                                                                                                                   

The Planets

Visibility of Planets :

Mercury: The planet is too close to the Sun to be visible from the beginning of the month and remains so till 27th, being in Superior Conjunction with the Sun on 19th. Thereafter it becomes visible in the western sky and sets about 1 hour after sunset for the remaining days of the month. The planet is in Perihelion or nearest to the Sun on 27th. 

Venus: The planet is too close to the Sun to be visible till 19th of the month. Thereafter it is visible in the western sky and sets about ½ hour after sunset for the remaining days of the month. 

MarsThe planet is visible in the western sky and sets about 1½ hours to 2 hours before local midnight throughout the month. 

Jupiter: The planet rises before sunrise and remains visible till the beginning of morning twilight throughout the month. It rises about 2½ hours to 3 hours before it upto third quarter of the month and about 3 hours to 3½ hours before it for the remaining days of the month. . 

Saturn: The planet rises about 2½ hours to 2 hours after local midnight upto first quarter of the month, about 2 hours to1½ hours after it upto second quarter of the month, about 1½ hours to 1 hour after it upto third quarter of the month and about 1 hour to ½ hour after it for the remaining days of the month. 

Uranus: The planet sets about 2½ hours to 2 hours after sunset upto first quarter of the month, about 2 hours to 1½ hours after it upto third quarter of the month. Thereafter it is too close to the Sun to be visible for the remaining days of the month. 

Neptune: The planet is too close to the Sun to be visible upto middle of the month. Thereafter it rises about  about 1½ hours  to 2 hours  before sunrise upto third quarter of the month and about 2 hours to 2½ hours before it for the remaining days of the month.

 

 


Conjunction of Planet :

Venus passes about ½° south of Uranus on 23rd

Mercury passes about 1º north of Uranus on 24th.

Mercury passes about 1½° north of Venus on 26th.

 

Planets

Planets in Zodiacal Constellation

Magnitude

Mercury (Budha)

        Moves from Aquarius (Kumbha) to Pisces (Mina) on 1th and                                  moves from Pisces (Mina) to Aries (Mesha) on 16th.

-0.5  to –2.2

-2.2 to –1.1 

Venus (Sukra)

        Moves from  Pisces (Mina) to Aries (Mesha)  on 10th .

-4.0 to -3.9

Mars (Mangal)

Moves from Taurus (Vrisha) to Gemini (Mithuna) on 14th

        +1.2 to +1.6

Jupiter (Brihaspati)

Moves from Capricornus (Makara) to Aquarius (Kumbha) on 6th.

-2.0 to –2.2

Saturn (Sani)

        Remains in Capricornus (Makara).

  +0.8 to +0.7

Uranus

Remains in Aries (Mesha).

 +6.0

Neptune

Remains in Aquarius (Kumbha).

 +8.0

Source : : Director

Positional Astronomy Centre

India Meteorological Department

Salt Lake, Kolkata - 700 091