Lunar Calendar (Sidereal) — September 2028
Hanoi, Vietnam|21.03°N, 105.85°E, 19м
| Day | Weekday | Lunar day | Moon phase | Zodiac sign |
|---|---|---|---|---|
| 1 | Fri | 13-th from 16:30 | 2nd Quarter | Capricornus |
| 2 | Sat | 14-th from 17:05 | 2nd Quarter | Aquarius from 20:45 |
| 3 | Sun | 15-th from 17:38 | 2nd Quarter | Aquarius |
| 4 | Mon | 16-th from 18:09 | Full Moon at 06:47 | Aquarius |
| 5 | Tue | 17-th from 18:41 | 3rd Quarter | Pisces from 09:25 |
| 6 | Wed | 18-th from 19:13 | 3rd Quarter | Pisces |
| 7 | Thu | 19-th from 19:47 | 3rd Quarter | Aries from 21:52 |
| 8 | Fri | 20-th from 20:24 | 3rd Quarter | Aries |
| 9 | Sat | 21-st from 21:05 | 3rd Quarter | Aries |
| 10 | Sun | 22-nd from 21:51 | 3rd Quarter | Taurus from 09:02 |
| 11 | Mon | 23-rd from 22:42 | 3rd Quarter | Taurus |
| 12 | Tue | 24-th from 23:39 | 4th Quarter from 07:45 | Gemini from 17:36 |
| 13 | Wed | 24-th | 4th Quarter | Gemini |
| 14 | Thu | 25-th from 00:40 | 4th Quarter | Cancer from 22:34 |
| 15 | Fri | 26-th from 01:43 | 4th Quarter | Cancer |
| 16 | Sat | 27-th from 02:47 | 4th Quarter | Cancer |
| 17 | Sun | 28-th from 03:51 | 4th Quarter | Leo from 00:05 |
| 18 | Mon | 29-th from 04:55 | 4th Quarter | Virgo from 23:29 |
| 19 | Tue | 1-st from 01:23 | New Moon at 01:23 | Virgo |
| 2-nd from 05:59 | ||||
| 20 | Wed | 3-rd from 07:04 | 1st Quarter | Libra from 22:50 |
| 21 | Thu | 4-th from 08:09 | 1st Quarter | Libra |
| 22 | Fri | 5-th from 09:14 | 1st Quarter | Libra |
| 23 | Sat | 6-th from 10:18 | 1st Quarter | Scorpius from 00:19 |
| 24 | Sun | 7-th from 11:19 | 1st Quarter | Scorpius |
| 25 | Mon | 8-th from 12:15 | 2nd Quarter from 20:10 | Sagittarius from 05:32 |
| 26 | Tue | 9-th from 13:05 | 2nd Quarter | Sagittarius |
| 27 | Wed | 10-th from 13:50 | 2nd Quarter | Capricornus from 14:47 |
| 28 | Thu | 11-th from 14:30 | 2nd Quarter | Capricornus |
| 29 | Fri | 12-th from 15:06 | 2nd Quarter | Capricornus |
| 30 | Sat | 13-th from 15:39 | 2nd Quarter | Aquarius from 02:44 |
What is this for?
The lunar calendar helps you choose favorable days for gardening (planting, watering, harvesting), self-care (haircuts, skincare), fishing, planning surgeries and medical procedures, starting new projects, and spiritual practices or meditation. By checking the Moon phase and its zodiac position, you can align your daily activities with natural rhythms.
Calculation Method
How we count lunar days
In our calendar, lunar days begin with Moonrise in your city. This applies to all days except the first one.
The first lunar day of each month starts at the New Moon — when the Moon passes between the Earth and the Sun. This moment is the same for the entire planet, no matter where you are.
But Moonrise time varies from city to city. It changes with latitude and longitude. That's why the length of the first lunar day can differ greatly between locations.
Important: you cannot calculate the difference in lunar day start times between cities using their time zones. Here's why: the first lunar day starts at the New Moon — a single global moment. All other lunar days start at Moonrise, which depends on local coordinates. As a result, the offset between two cities' lunar schedules is uneven — it does not equal the difference in their time zones. For example, if in London day 2 starts at 23:02 and in New York day 2 starts at 16:10, the difference of 6 hours 52 minutes does not match the time zone difference (UTC+1 vs UTC-5 = 6 hours). This irregularity happens because the first lunar day breaks the pattern.