翻刻
在レバ。内ニテ陰暦也。黄道ノ北ヲ以テ内トシ。黄
道ノ南ヲ以テ外トス。黄道ノ輪ノ内外ヲ云ニハ
非ズト知ベシ。
食限
白道ト黄道線ト交ルノ所。陰暦限八度。陽暦限六
度ヲ日食限トシ。十三度余ヲ月食限トス。日ハ此
ノ八度六度ノ中ニ交会当レバ食シ。月ハ此ノ十
三度余ノ中ニ月行当レバ食ス。則日月合璧スル
所。食線ノ一躔ナリ。此ノ食限ハ。授時暦ノ法ニ由
テ云。
皆既
日食月食共ニ。十分ノ食ニテ。全体皆光映ナキヲ。
皆既トイフ。総テ日食ハ缺ケ食スルノ間短ク月
食ハ長シ。日月食共ニ皆既ノ食ハ。始終ノ間何刻
ニシテ。始終ノ間ニ天行左旋スルコト何度。始終
ノ間。食シナガラ日月右旋スルコト何度ト云ハ。
暦術ニ由テ知ベシ。皆既ノ食。日食ハ十分ヲ限リ
トシ。月食ハ十五分ヲ限リトス。月食ハ地蔭ノ全
径。月体ノ一ツ半ニ相亙ル由テ也。故ニ日食ハ。
虧初食甚復円トテ。始終ノ間ヲ三ツニ限ルト雖
現代語訳
在れば、内にて陰暦なり。黄道の北を以て内とし、黄道の南を以て外とす。黄道の輪の内外を言うには非ずと知るべし。
食限
白道と黄道線と交わる所、陰暦限八度、陽暦限六度を日食限とし、十三度余を月食限とす。日はこの八度六度の中に交会当たれば食し、月はこの十三度余の中に月行当たれば食す。すなわち日月合璧する所、食線の一躔なり。この食限は、授時暦の法に由って言う。
皆既
日食月食共に、十分の食にて、全体皆光映なきを皆既という。総て日食は欠け食するの間短く月食は長し。日月食共に皆既の食は、始終の間何刻にして、始終の間に天行左旋すること何度、始終の間、食しながら日月右旋すること何度と言うは、暦術に由って知るべし。皆既の食、日食は十分を限りとし、月食は十五分を限りとす。月食は地陰の全径、月体の一つ半に相亙る由てなり。故に日食は、虧初食甚復円とて、始終の間を三つに限ると雖も
英語訳
When [the moon] is located [north of the ecliptic], it is interior and constitutes the negative calendar. The north of the ecliptic is considered interior, and the south of the ecliptic is considered exterior. One should understand that this does not refer to the inside and outside of the ecliptic circle itself.
Eclipse Limits
At the intersection of the white path and the ecliptic line, the negative calendar limit of eight degrees and positive calendar limit of six degrees constitute the solar eclipse limit, while thirteen degrees and some constitute the lunar eclipse limit. When the sun encounters conjunction within these eight or six degrees, an eclipse occurs; when the moon's motion falls within these thirteen degrees and some, an eclipse occurs. This is where the sun and moon unite, constituting one station of the eclipse line. These eclipse limits are stated according to the methods of the Shoushi Calendar.
Total Eclipse
For both solar and lunar eclipses, when there is a ten-tenths eclipse with the entire body having no luminous reflection, this is called a total eclipse. Generally, solar eclipses have a short duration of obscuration while lunar eclipses are long. For total eclipses of both sun and moon, questions such as how many quarters pass from beginning to end, how many degrees the celestial motion rotates leftward during this period, and how many degrees the sun and moon rotate rightward while being eclipsed should be understood through calendar techniques. For total eclipses, solar eclipses are limited to ten parts, while lunar eclipses are limited to fifteen parts. This is because the full diameter of Earth's shadow extends to one and a half times the moon's body. Therefore, although solar eclipses are divided into three phases from beginning to end - initial loss, maximum eclipse, and restoration to roundness -