Lunar Calendar (Sidereal) — September 2026
Hanoi, Vietnam|21.03°N, 105.85°E, 19м
| Day | Weekday | Lunar day | Moon phase | Zodiac sign |
|---|---|---|---|---|
| 1 | Tue | 21-st from 20:44 | 3rd Quarter | Aries from 06:27 |
| 2 | Wed | 22-nd from 21:28 | 3rd Quarter | Aries |
| 3 | Thu | 23-rd from 22:18 | 3rd Quarter | Taurus from 10:26 |
| 4 | Fri | 24-th from 23:15 | 4th Quarter from 14:51 | Taurus |
| 5 | Sat | 24-th | 4th Quarter | Gemini from 13:17 |
| 6 | Sun | 25-th from 00:18 | 4th Quarter | Gemini |
| 7 | Mon | 26-th from 01:24 | 4th Quarter | Cancer from 15:37 |
| 8 | Tue | 27-th from 02:31 | 4th Quarter | Cancer |
| 9 | Wed | 28-th from 03:35 | 4th Quarter | Leo from 18:14 |
| 10 | Thu | 29-th from 04:37 | 4th Quarter | Leo |
| 11 | Fri | 30-th from 05:35 | New Moon at 10:27 | Virgo from 22:11 |
| 1-st from 10:27 | ||||
| 12 | Sat | 2-nd from 06:31 | 1st Quarter | Virgo |
| 13 | Sun | 3-rd from 07:27 | 1st Quarter | Virgo |
| 14 | Mon | 4-th from 08:22 | 1st Quarter | Libra from 04:35 |
| 15 | Tue | 5-th from 09:17 | 1st Quarter | Libra |
| 16 | Wed | 6-th from 10:12 | 1st Quarter | Scorpius from 14:03 |
| 17 | Thu | 7-th from 11:07 | 1st Quarter | Scorpius |
| 18 | Fri | 8-th from 12:01 | 1st Quarter | Scorpius |
| 19 | Sat | 9-th from 12:53 | 2nd Quarter from 03:43 | Sagittarius from 02:02 |
| 20 | Sun | 10-th from 13:41 | 2nd Quarter | Sagittarius |
| 21 | Mon | 11-th from 14:26 | 2nd Quarter | Capricornus from 14:31 |
| 22 | Tue | 12-th from 15:06 | 2nd Quarter | Capricornus |
| 23 | Wed | 13-th from 15:44 | 2nd Quarter | Capricornus |
| 24 | Thu | 14-th from 16:19 | 2nd Quarter | Aquarius from 01:08 |
| 25 | Fri | 15-th from 16:53 | 2nd Quarter | Aquarius |
| 26 | Sat | 16-th from 17:28 | Full Moon at 23:49 | Pisces from 08:38 |
| 27 | Sun | 17-th from 18:04 | 3rd Quarter | Pisces |
| 28 | Mon | 18-th from 18:42 | 3rd Quarter | Aries from 13:17 |
| 29 | Tue | 19-th from 19:26 | 3rd Quarter | Aries |
| 30 | Wed | 20-th from 20:15 | 3rd Quarter | Taurus from 16:13 |
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.

