How to calculate your ascendant easily

Who I am
Pau Monfort
@paumonfort
Author and references

To calculate your ascendant, you must first know your birth date and your birth time.


1. Find the sidereal time corresponding to your date of birth in the Table of sidereal hours. (see below)

2. Add it to your birth time.

3. Check if you were born in winter time or summer time in the Table of summer hours. If you were born in daylight saving time, you must subtract 1 hour from your birth time. (NB: In 1942, the time is advanced all year round from February 9 across Canada, until September 30, 1945).



4. Once added up, if your number of hours exceeds 24 hours, subtract 24 hours from this number. If your number of minutes exceeds 60, subtract 60 minutes and add 1 hour. The result will tell you your ascendant.

5. Refer to the Table of ancestors (see below) for this one.

Example 1: 

You were born on March 13, 1966 (standard time) at 6:58 in the morning. 

Add: 6:58 a.m. (your birth time) + 11:20 a.m. (sidereal time). The total is: 17 h 78 min.

If the number of minutes exceeds 60, subtract the 60 minutes and add 1 hour: 17:18 p.m. (17:78 p.m. - 0:60 a.m.) + 1 hour = 18:18 p.m. (actual ascending).

You are therefore Pisces ascendant Aries.

Example 2: 

You were born on September 7, 1984 (summer time) at 6:58 in the morning. 

Add: 6:58 a.m. (your birth time) + 23:02 p.m. (sidereal time). The total is: 30 h 00 min. Since September 7, 1984 is daylight saving time, subtract 1 hour: 29 h 00 min.

If the number of hours exceeds 24, subtract 24 hours from the total: 29 h 00 - 24 h = 5 h 00 min (actual ascending).


So you are Virgo ascendant Virgo.

Table of sidereal hours

Day Jan. Feb. Mars April  Mai    June   Jul.  August Sept. Oct.  Nov. Dec.
1 6 hours 8 hours 10 hours 12 hours 14 hours 16 hours 18 hours 20 hours 22 hours 0 hours 2 hours 4 hours
2 6 hours 8 hours 10 hours 12 hours 14 hours 16 hours 18 hours 20 hours 22 hours 0 hours 2 hours 4 hours
3 6 hours 8 hours 10 hours 12 hours 14 hours 16 hours 18 hours 20 hours 22 hours 0 hours 2 hours 4 hours
4 6 hours 8 hours 10 hours 12 hours 14 hours 16 hours 18 hours 20 hours 22 hours 0 hours 2 hours 4 hours
5 6 hours 8 hours 10 hours 12 hours 14 hours 16 hours 18 hours 20 hours 22 hours 0 hours 2 hours 4 hours
6 6 hours 8 hours 10 hours 12 hours 14 hours 16 hours 18 hours 20 hours 22 hours 0 hours 2 hours 4 hours
7 7 hours 9 hours 10 hours 12 hours 14 hours 17 hours 18 hours 20 hours 23 hours 1 hours 3 hours 5 hours
8 7 hours 9 hours 11 hours 13 hours 15 hours 17 hours 19 hours 21 hours 23 hours 1 hours 3 hours 5 hours
9 7 hours 9 hours 11 hours 13 hours 15 hours 17 hours 19 hours 21 hours 23 hours 1 hours 3 hours 5 hours
10 7 hours 9 hours 11 hours 13 hours 15 hours 17 hours 19 hours 21 hours 23 hours 1 hours 3 hours 5 hours
11 7 hours 9 hours 11 hours 13 hours 15 hours 17 hours 19 hours 21 hours 23 hours 1 hours 3 hours 5 hours
12 7 hours 9 hours 11 hours 13 hours 15 hours 17 hours 19 hours 21 hours 23 hours 1 hours 3 hours 5 hours
13 7 hours 9 hours 11 hours 13 hours 15 hours 17 hours 19 hours 21 hours 23 hours 1 hours 3 hours 5 hours
14 7 hours 9 hours 11 hours 13 hours 15 hours 17 hours 19 hours 21 hours 23 hours 1 hours 3 hours 5 hours
15 7 hours 9 hours 11 hours 13 hours 15 hours 17 hours 19 hours 21 hours 23 hours 1 hours 3 hours 5 hours
16 7 hours 9 hours 11 hours 13 hours 15 hours 17 hours 19 hours 21 hours 23 hours 1 hours 3 hours 5 hours
17 7 hours 9 hours 11 hours 13 hours 15 hours 17 hours 19 hours 21 hours 23 hours 1 hours 3 hours 5 hours
18 7 hours 9 hours 11 hours 13 hours 15 hours 17 hours 19 hours 21 hours 23 hours 1 hours 3 hours 5 hours
19 7 hours 9 hours 11 hours 13 hours 15 hours 17 hours 19 hours 21 hours 23 hours 1 hours 3 hours 5 hours
20 7 hours 9 hours 11 hours 13 hours 15 hours 17 hours 19 hours 21 hours 23 hours 1 hours 3 hours 5 hours
21 7 hours 9 hours 11 hours 13 hours 15 hours 17 hours 19 hours 21 hours 23 hours 1 hours 3 hours 5 hours
22 7 hours 9 hours 12 hours 13 hours 15 hours 17 hours 19 hours 22 hours 23 hours 2 hours 4 hours 6 hours
23 8 hours 10 hours 12 hours 14 hours 15 hours 18 hours 20 hours 22 hours 0 hours 2 hours 4 hours 6 hours
24 8 hours 10 hours 12 hours 14 hours 16 hours 18 hours 20 hours 22 hours 0 hours 2 hours 4 hours 6 hours
25 8 hours 10 hours 12 hours 14 hours 16 hours 18 hours 20 hours 22 hours 0 hours 2 hours 4 hours 6 hours
26 8 hours 10 hours 12 hours 14 hours 16 hours 18 hours 20 hours 22 hours 0 hours 2 hours 4 hours 6 hours
27 8 hours 10 hours 12 hours 14 hours 16 hours 18 hours 20 hours 22 hours 0 hours 2 hours 4 hours 6 hours
28 8 hours 10 hours 12 hours 14 hours 16 hours 18 hours 20 hours 22 hours 0 hours 2 hours 4 hours 6 hours
29 8 hours 10 hours 12 hours 14 hours 16 hours 18 hours 20 hours 22 hours 0 hours 2 hours 4 hours 6 hours
30 8 hours   12 hours 14 hours 16 hours 18 hours 20 hours 22 hours 0 hours 2 hours 4 hours 6 hours
31 8 hours   12 hours   16 hours   20 hours 22 hours   2 hours   6 hours


Table of ancestors

Ascendant Leo 00:34 a.m. to 3:16 a.m.
Virgo Ascendant 3:17 a.m. to 6:00 a.m.
Ascendant Libra 6:01 a.m. to 8:43 a.m.
Scorpio Ascendant 8:44 a.m. to 11:25 a.m.
Sagittarius rising 11:26 a.m. to 13:53 a.m.
Capricorn rising 13:54 a.m. to 15:42 a.m.
Aquarius rising 15:43 a.m. to 17:00 a.m.
Pisces Ascendant 17:01 a.m. to 17:58 a.m.
Aries Ascendant 17:59 a.m. to 18:58 a.m.
Taurus Ascendant 18:59 a.m. to 20:17 a.m.
Gemini Ascendant 20:18 a.m. to 22:08 a.m.
Ascendant Cancer 22:09 a.m. to 00:33 a.m.

To know the influence of your ascendant on your astrological sign, select your astrological sign from the following list:



  • Aries
  • Taurus
  • Gemini
  • Cancer
  • Leo
  • Virgin
  • Balance
  • Scorpion
  • Sagittarius
  • Capricorn
  • Verseau
  • Fish

To read also:

  • What does your ascendant say about you?
  • Love compatibility according to astrology: which planets to analyze to understand your relationship?
  • The return of Saturn, or the famous crisis of the thirties
add a comment of How to calculate your ascendant easily
Comment sent successfully! We will review it in the next few hours.