regex101: regex for iso 8601 date between 1970 and 2999

^start of string

Group 1(19[789]\d|2\d{3})

1st Alternative19[789]\d

19the literal text 19

Character Class[789]

7the literal 7 (55₁₀ / 67₈ / 37₁₆)

8the literal 8 (56₁₀ / 70₈ / 38₁₆)

9the literal 9 (57₁₀ / 71₈ / 39₁₆)

\da digit

2nd Alternative2\d{3}

2the literal 2 (50₁₀ / 62₈ / 32₁₆)

\d{3}a digit, repeated exactly 3 times

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Group 2((0[13578]|1[02])-([0-2]\d|3[01])|02-[0-2]\d|0[469]|11-([0-2]\d|30))

1st Alternative(0[13578]|1[02])-([0-2]\d|3[01])

Group 3(0[13578]|1[02])

1st Alternative0[13578]

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

Character Class[13578]

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

3the literal 3 (51₁₀ / 63₈ / 33₁₆)

5the literal 5 (53₁₀ / 65₈ / 35₁₆)

7the literal 7 (55₁₀ / 67₈ / 37₁₆)

8the literal 8 (56₁₀ / 70₈ / 38₁₆)

2nd Alternative1[02]

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

Character Class[02]

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

2the literal 2 (50₁₀ / 62₈ / 32₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Group 4([0-2]\d|3[01])

1st Alternative[0-2]\d

Character Class[0-2]

0-2one character from 0 (48₁₀) to 2 (50₁₀)

\da digit

2nd Alternative3[01]

3the literal 3 (51₁₀ / 63₈ / 33₁₆)

Character Class[01]

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

2nd Alternative02-[0-2]\d

02-the literal text 02-

Character Class[0-2]

0-2one character from 0 (48₁₀) to 2 (50₁₀)

\da digit

3rd Alternative0[469]

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

Character Class[469]

4the literal 4 (52₁₀ / 64₈ / 34₁₆)

6the literal 6 (54₁₀ / 66₈ / 36₁₆)

9the literal 9 (57₁₀ / 71₈ / 39₁₆)

4th Alternative11-([0-2]\d|30)

11-the literal text 11-

Group 5([0-2]\d|30)

1st Alternative[0-2]\d

Character Class[0-2]

0-2one character from 0 (48₁₀) to 2 (50₁₀)

\da digit

2nd Alternative30

30the literal text 30

Tthe literal T (84₁₀ / 124₈ / 54₁₆) (case sensitive)

Group 6([01]\d|2[0-4])

Group 7(:[0-5]\d){2}

Zthe literal Z (90₁₀ / 132₈ / 5A₁₆) (case sensitive)

$end of string

Search reference

Regular Expression

^(19[789]\d|2\d{3})-((0[13578]|1[02])-([0-2]\d|3[01])|02-[0-2]\d|0[469]|11-([0-2]\d|30))T([01]\d|2[0-4])(:[0-5]\d){2}Z$

Unit Tests

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