20 Minute Timer - Roman Timer XX Minutes

Silent 20 minute countdown timer with finishing alarm.
Timer in Roman numbers/Roman numerals
XX minutes

C : 100 (XC : 90 = 100 - 10)
L : 50 (XL : 40 = 50 - 10)
X : 10 (IX : 9 = 10 - 1)
V : 5 (IV : 4 = 5 - 1)

[100~91]
C, XCIX, XCVIII, XCVII, XCVI, XCV, XCIV, XCIII, XCII, XCI
[90~81]
XC, LXXXIX, LXXXVIII, LXXXVII, LXXXVI, LXXXV, LXXXIV, LXXXIII, LXXXII, LXXXI
[80~71]
LXXX, LXXIX, LXXVIII, LXXVII, LXXVI, LXXV, LXXIV, LXXIII, LXXII, LXXI
[70~61]
LXX, LXIX, LXVIII, LXVII, LXVI, LXV, LXIV, LXIII, LXII, LXI
[60~51]
LX, LIX, LVIII, LVII, LVI, LV, LIV, LIII, LII, LI
[50~41]
L, XLIX, XLVIII, XLVII, XLVI, XLV, XLIV, XLIII, XLII, XLI
[40~31]
XL, XXXIX, XXXVIII, XXXVII, XXXVI, XXXV, XXXIV, XXXIII, XXXII, XXXI
[30~21]
XXX, XXIX, XXVIII, XXVII, XXVI, XXV, XXIV, XXIII, XXII, XXI
[20~11]
XX, XIX, XVIII, XVII, XVI, XV, XIV, XIII, XII, XI
[10~1]
X, IX, VIII, VII, VI, V, IV, III, II, I

Zero(0): The number zero does not have its own Roman numeral. About 725, Bede or one of his colleagues used the letter N, the abbreviation (short form) of nihil (the Latin word for "nothing").
Source: https://simple.wikipedia.org/wiki/Rom...

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