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May 1998 |
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| Jan. | Feb. | Mar. | Apr. | May | June | July | Aug. | Sep. | Oct. | Nov. | Dec. |
| 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 |
| Day | Moonage | Phenomenon (JST) | |
|---|---|---|---|
| 1 | Fri | 4.6 | 02:00 Delta-Lib is at minimum brightness |
| 2 | Sat | 5.6 | Hachizyu-hachi-ya |
| 01h Comet 68P/Klemola passses perihelion(Period 10.8 years) | |||
| 3 | Sun | 6.6 | National Holiday in Japan (Kenpo Kinenbi) |
| 19:04 First quarter moon | |||
| 4 | Mon | 7.6 | National holiday in Japan |
| 19:30 Neptune is at apogee(R.A.:20h17m.4) | |||
| 5 | Tue | 8.6 | National holiday in Japan (Kodomo no hi) |
| 01:45 Mercury is at western greatest elongation(26o43'.6,Mag:0.5,Dia.:8".1) | |||
| 6 | Wed | 9.6 | R-Cas is at maximum brightness (Mag:Period 430 days, 4.7-13.5) |
| 02:03 Longitude of the sun reaches 45 degrees | |||
| 14h Eta-Aqr meteor shower is at peak(Apr.25-May 10) | |||
| 23:42 Moon is closest to Asteroid Juno (03o52'.9) | |||
| 7 | Thu | 10.6 | R-Hya is at maximum brightness (Mag:Period 388 days, 3.5-10.9) |
| 8 | Fri | 11.6 | 01:34 Delta-Lib is at minimum brightness |
| 04:11 Moon passes equator, to southern hemisphere | |||
| 18h Moon is farthest from the Earth (405,859km,Dia.:29'26".6) | |||
| 9 | Sat | 12.6 | 00:09 Uranus is most at west(Mag:5.8,Dia.:3".5) |
| 10 | Sun | 13.6 | |
| 11 | Mon | 14.6 | 23:29 Full Moon |
| 12 | Tue | 15.6 | |
| 13 | Wed | 16.6 | 01:06 Mercury passes 00o49'.5 south of Saturn |
| 03:38 Mars is at conjunction(00o02'.8,Mag:1.3,Dia.:3".8 north of Sun) | |||
| 07:25 Saturn is closest to Mercury (00o45'.6) | |||
| 09:57 Moon passes 07o30'.2 south of Pluto | |||
| 14 | Thu | 17.6 | |
| 15 | Fri | 18.6 | 01:09 Delta-Lib is at minimum brightness |
| 14:33 Moon is at south most(Decl.:-18o54'.5) | |||
| 19:16 Algol is at minimum brightness | |||
| 16 | Sat | 19.6 | |
| 17 | Sun | 20.6 | R-And is at maximum brightness (Mag:Period 409 days, 5.8-14.9) |
| 15h Heliocentric latitude of Mercury is most at south | |||
| 16:24 Moon passes 02o32'.3 north of Neptune | |||
| 18 | Mon | 21.6 | 05:00 Mercury is closest to Asteroid Ceres (03o49'.1) |
| 05:24 Uranus is at apogee(R.A.:21h01m.6) | |||
| 11:57 Moon passes 02o45'.3 north of Uranus | |||
| 19 | Tue | 22.6 | 13:35 Last quarter moon |
| 20 | Wed | 23.6 | |
| 21 | Thu | 24.6 | 08:16 Moon passes 00o21'.5 south of Jupiter(Occultation in Australia) |
| 15:05 Longitude of the sun reaches 60 degrees | |||
| 22 | Fri | 25.6 | 00:43 Delta-Lib is at minimum brightness |
| 05:27 Moon passes equator, to northern hemisphere | |||
| 23 | Sat | 26.6 | Z-Cyg is at maximum brightness (Mag:Period 263 days,7.1-14.7) |
| 06:50 Moon passes 01o40'.9 south of Venus | |||
| 17:13 Moon passes 01o44'.3 south of Saturn | |||
| 24 | Sun | 27.6 | R-Vir is at maximum brightness (Mag:Period 145 days, 6.1-12.1) |
| 09h Moon is nearest to the Earth (361,653km,Dia.:33'02".5) | |||
| 19:50 Moon passes 02o46'.6 south of Mercury | |||
| 25 | Mon | 28.6 | 21:13 Mon passes 05o16'.3 south of Mars |
| 26 | Tue | 0.3 | 04:32 New Moon |
| 17:51 Moon is closest to Asteroid Vesta (02o31'.4) | |||
| 27 | Wed | 1.3 | |
| 28 | Thu | 2.3 | 08h Pluto is nearest to the Earth(29.06417AU, 4,348,000,000km) |
| 09:14 Moon is at north most(Decl.:+18o58'.1) | |||
| 29 | Fri | 3.3 | S-UMa is at maximum brightness (Mag:Period 285 days, 7.4-12.7) |
| 00:17 Delta-Lib is at minimum brightness | |||
| 08:26 Saturn is closest to Venus (00o15'.5) | |||
| 10:37 Venus passes 00o16'.5 north of Saturn | |||
| 30 | Sat | 4.3 | R-Oph is at maximum brightness (Mag:Period 306 days, 5.2-14.4) |
| 14:42 Pluto is at opposition(Mag:13.7,Dia.:0".1) | |||
| 31 | Sun | 5.3 | |
