APRIL 2021 OBSERVING Lunar Almanac Northern Hemisphere Sky Chart North h D G Va oub ala Op arbialb lests yxy e a D n G iff ecn lests trar Pl lob use luclsut atrar se an ul en et ar beub trer clu lual ar a y ne tsetre bu r la μ α 19 h EUS Fa g Ve a n ci g β ε NE δ γ D R A C β ν O H ζ 92 π E SA UR R NO MI M η R ε η U April 26 C N ASA / LRO Little er Dipp Yellow dots indicate which part of the Moon's limb is tipped the most toward Earth by libration. γ E β L M1 3 ζ 28 27 S ub ν ξ α δ ε VI β April 12 10:02 UT 02:31 UT FIRST QUARTER FULL MOON April 20 April 27 06:59 UT 03:32 UT η S E X TA N α ica E C L I P T I C C -1 O R δ Perigee April 27, 15h UT 357,381 km Diameter 33′ 26″ FAVORABLE LIBRATIONS 42 * Pingré Crater April 26 * Bailly Crater April 27 * Boguslawsky Crater April 28 APRIL 2 021 * SK Y & TELESCOPE S ER HYDRA α Diameter 29′ 25″ U S ε 406,118 km 1 2 3 4 V CR AT γ UT β April 14, n ci Fa Apogee η Re Sp 18h γ O β γ Moon Apr 26 0 DISTANCES ζ n Moo 3 Apr 2 O April 4 LE α RG NEW MOON O LE OR IN M M5 LAST QUARTER +60° 30 β 29 β 28 α 27 U M R A SA JO R 26 γ 25 Big Dip pe r 24 δ 23 ε 22 α 21 ζ 20 M51 19 η 18 COMA BEREN ICES 17 β 16 CA N E S V E N AT ICI 15 M3 14 γ 13 α 12 BOÖ TES 11 Arcturu s 10 ε 9 α 8 SERPENS 7 h 6 16 5 Facing East 4 or 3 β 2 α S AT FRI THU 1 an WED Mi z & A ar lc TUE MON SUN Th β CO B RO O RE NA AL IS MOON PHASES Planet location shown for mid-month g SE USING THE NORTHERN HEMISPHERE MAP Go out within an hour of a time listed to the right. Turn the map around so the yellow label for the direction you're facing is at the bottom. That's the horizon. The center of the map is overhead. Ignore the parts of the map above horizons you're not facing. Exact for latitude 40°N. 13h α ANTLI - 40° 10 Facing