North Node Calculator

Enter your birth date to find your north node and south node. The node changes sign only every 18 months or so, so the date alone is enough.

Your birth details

Start typing your birth city, then pick it from the list.

City not listed? Enter a UTC offset

Use the offset that applied on your birth date, including daylight saving. South latitudes and west longitudes are negative.

Your birth details stay in this browser. Nothing is sent to a server.

Result

Enter your birth date and press Calculate. Your result appears here as plain text you can copy or share.

Worked example

Born 5 May 1990, 14:30 UTC

North node in Aquarius, 11°51′

Air · Fixed · South node in Leo, 11°51′

  1. The birth time is already in UTC: 14:30 on 5 May 1990.
  2. The ecliptic longitude of the mean north node at that instant is 311.86°.
  3. Each sign spans 30°. 311.86° is 10 whole signs (Aries to Capricorn) plus 11.86°, so the mean north node is in the eleventh sign, Aquarius, at 11°51′.
  4. 11°51′ is 11°51′ from Capricorn: outside the 1° cusp band, so no cusp warning is shown.

North node dates

North node sign changes, 1900–2035

Every date the mean north node entered a new sign, in UTC. The node moves backwards through the zodiac, so it enters each sign at 29° and leaves at 0°. The south node is always in the opposite sign.

1900s6 changes
North node, 1900s
DateTime (UTC)North node entersSouth node enters
28 Dec 190018:10ScorpioTaurus
18 Jul 190206:54LibraAries
4 Feb 190419:38VirgoPisces
24 Aug 190508:23LeoAquarius
13 Mar 190721:07CancerCapricorn
30 Sep 190809:51GeminiSagittarius
1910s7 changes
North node, 1910s
DateTime (UTC)North node entersSouth node enters
19 Apr 191022:35TaurusScorpio
7 Nov 191111:20AriesLibra
27 May 191300:04PiscesVirgo
14 Dec 191412:49AquariusLeo
3 Jul 191601:33CapricornCancer
20 Jan 191814:18SagittariusGemini
10 Aug 191903:03ScorpioTaurus
1920s6 changes
North node, 1920s
DateTime (UTC)North node entersSouth node enters
26 Feb 192115:47LibraAries
16 Sep 192204:32VirgoPisces
4 Apr 192417:17LeoAquarius
23 Oct 192506:01CancerCapricorn
12 May 192718:46GeminiSagittarius
29 Nov 192807:31TaurusScorpio
1930s7 changes
North node, 1930s
DateTime (UTC)North node entersSouth node enters
18 Jun 193020:16AriesLibra
6 Jan 193209:00PiscesVirgo
25 Jul 193321:45AquariusLeo
12 Feb 193510:30CapricornCancer
31 Aug 193623:15SagittariusGemini
21 Mar 193812:00ScorpioTaurus
9 Oct 193900:45LibraAries
1940s6 changes
North node, 1940s
DateTime (UTC)North node entersSouth node enters
27 Apr 194113:30VirgoPisces
15 Nov 194202:15LeoAquarius
3 Jun 194415:00CancerCapricorn
22 Dec 194503:45GeminiSagittarius
11 Jul 194716:30TaurusScorpio
28 Jan 194905:15AriesLibra
1950s7 changes
North node, 1950s
DateTime (UTC)North node entersSouth node enters
17 Aug 195018:00PiscesVirgo
6 Mar 195206:45AquariusLeo
23 Sep 195319:30CapricornCancer
13 Apr 195508:15SagittariusGemini
30 Oct 195621:01ScorpioTaurus
20 May 195809:46LibraAries
7 Dec 195922:31VirgoPisces
1960s6 changes
North node, 1960s
DateTime (UTC)North node entersSouth node enters
26 Jun 196111:16LeoAquarius
14 Jan 196300:02CancerCapricorn
2 Aug 196412:47GeminiSagittarius
20 Feb 196601:33TaurusScorpio
9 Sep 196714:18AriesLibra
29 Mar 196903:03PiscesVirgo
1970s6 changes
North node, 1970s
DateTime (UTC)North node entersSouth node enters
16 Oct 197015:49AquariusLeo
5 May 197204:34CapricornCancer
22 Nov 197317:20SagittariusGemini
12 Jun 197506:05ScorpioTaurus
29 Dec 197618:51LibraAries
19 Jul 197807:37VirgoPisces
1980s7 changes
North node, 1980s
DateTime (UTC)North node entersSouth node enters
5 Feb 198020:22LeoAquarius
25 Aug 198109:08CancerCapricorn
14 Mar 198321:53GeminiSagittarius
1 Oct 198410:39TaurusScorpio
20 Apr 198623:25AriesLibra
8 Nov 198712:11PiscesVirgo
28 May 198900:56AquariusLeo
1990s6 changes
North node, 1990s
DateTime (UTC)North node entersSouth node enters
15 Dec 199013:42CapricornCancer
4 Jul 199202:28SagittariusGemini
21 Jan 199415:14ScorpioTaurus
11 Aug 199504:00LibraAries
27 Feb 199716:46VirgoPisces
17 Sep 199805:32LeoAquarius
2000s7 changes
North node, 2000s
DateTime (UTC)North node entersSouth node enters
5 Apr 200018:18CancerCapricorn
24 Oct 200107:04GeminiSagittarius
13 May 200319:50TaurusScorpio
30 Nov 200408:36AriesLibra
19 Jun 200621:22PiscesVirgo
7 Jan 200810:08AquariusLeo
26 Jul 200922:54CapricornCancer
2010s6 changes
North node, 2010s
DateTime (UTC)North node entersSouth node enters
13 Feb 201111:41SagittariusGemini
2 Sep 201200:27ScorpioTaurus
22 Mar 201413:13LibraAries
10 Oct 201501:59VirgoPisces
28 Apr 201714:45LeoAquarius
16 Nov 201803:31CancerCapricorn
2020s7 changes
North node, 2020s
DateTime (UTC)North node entersSouth node enters
4 Jun 202016:18GeminiSagittarius
23 Dec 202105:04TaurusScorpio
12 Jul 202317:51AriesLibra
29 Jan 202506:37PiscesVirgo
18 Aug 202619:24AquariusLeo
7 Mar 202808:10CapricornCancer
24 Sep 202920:57SagittariusGemini
2030s4 changes
North node, 2030s
DateTime (UTC)North node entersSouth node enters
14 Apr 203109:43ScorpioTaurus
31 Oct 203222:30LibraAries
21 May 203411:16VirgoPisces
9 Dec 203500:03LeoAquarius

Method

How this calculator works

Your birth time is converted to UTC using the time zone in force at your birth place on that date. The mean lunar node is then computed with the standard series from Jean Meeus’s Astronomical Algorithms, measured in the tropical zodiac. Each sign spans 30°, so that position gives both your sign and the exact degree within it.

Full methodAccuracy against NASA JPL

Questions

North Node questions

What is the north node?

One of the two points where the Moon’s orbit crosses the Sun’s apparent path. The north node is where the Moon crosses heading north; the south node is directly opposite. The pair moves backwards through the zodiac, changing sign about every 18 months.

Mean node or true node?

This calculator uses the mean node, which moves smoothly. The true node wobbles around it by up to about 1.5°, so near a sign boundary the two can disagree. Check which one another site uses before comparing.

Do I need my birth time?

No. The mean node moves about 3′ a day, so the date is enough unless you were born on the day it changed sign.

What is the south node?

The point exactly opposite the north node, always in the opposite sign at the same degree.