[AD COGNOSCENDUM QUODLIBET TEMPUS DIEI PER SOLIS INDICACIONEM, ET QUODLIBET TEMPUS NOCTIS PER QUASDAM STELLAS IN CELO FIXAS; AC ECIAM AD INVENIENDUM ET COGNOSCENDUM SIGNUM SUPER ORIZONTEM QUI COMMUNITER VOCATUR ASCENDENS.] Tak the altitude of the sonne whan thee list, as I have said; and set the degree of the sonne, in cas that it be by-forn the middel of the day, among thyn almikanteras on the est side of thyn Astrolabie; and yif it be after the middel of the day, set the degree of thy sonne up-on the west side; tak this manere of setting for a 5 general rewle, ones for evere. And whan thou hast set the degree of thy sonne up as many almikanteras of heyghte as was the altitude of the sonne taken by thy rewle, ley over thy label, up-on the degree of the sonne; and thanne wol the point of thy label sitten in the bordure, up-on the verrey tyd of the day. Ensample 10 as thus: the yeer of oure lord 1391, the 12 day of March, I wold knowe the tyd of the day. I took the altitude of my sonne, and fond that it was 25 degrees and 30 of minutes of heyghte in the bordure on the bak-syde. Tho turnede I myn Astrolabie, and by-cause that it was by-forn midday, I turnede my riet, and sette the 15 degree of the sonne, that is to seyn, the 1 degree of Aries, on the right syde of myn Astrolabie, up-on that 25 degrees and 30 of minutes of heyghte among myn almikanteras; tho leide I my label up-on the degree of my sonne, and fond the poynte of my label in the bordure, up-on a capital lettre that is cleped an X; tho rekened 20 I alle the capitalles lettres fro the lyne of midnight un-to this forseide lettre X, and fond that it was 9 of the clokke of the day. Tho loked I down up-on the est orisonte, and fond there the 20 degree of Geminis assending; which that I tok for myn assendent. And in this wyse hadde I the experience for ever-mo in which 25 maner I sholde knowe the tyd of the day, and eek myn assendent. Tho wolde I wite the same night folwing the hour of the night, and wroughte in this wyse. Among an heep of sterris fixe, it lyked me for to take the altitude of the feire white sterre that is cleped Alhabor; and fond hir sitting on the west side of the lyne 30 of midday, 18 degres of heighte taken by my rewle on the bak-syde. Tho sette I the centre of this Alhabor up-on 18 degrees among myn almikanteras, up-on the west syde; by-cause that she was founden on the west syde. Tho leide I my label over the degree of the sonne that was descended under the weste orisonte, and 35 rikened alle the lettres capitals fro the lyne of midday un-to the point of my label in the bordure; and fond that it was passed 8 of the clokke the space of 2 degrees. Tho loked I doun up-on myn est orisonte, and fond ther 23 degrees of Libra assending, whom I tok for myn assendent; and thus lerned I to knowe ones for ever 40