regex101: Date Validation #2

Pro

^start of line

Non-Capturing Group(?:((?:16|[357][26]|[2468][048])(?:[0248][048]|[13579][26])|(?:1[6-9]|[2-9][0-9])(?:0[48]|[13579][26]|[2468][048])|(?:15)(?:84|9[048]))([\-.\/])(?:(0?[13578]|1[02])(?:\2)(0?[1-9]|[12][0-9]|3[01])|(0?[469]|11)(?:\2)(0?[1-9]|[12][0-9]|30)|(0?2)(?:\2)(0?[1-9]|[12][0-9]))|((?:16|[357][26]|[2468][048])(?:0[1235679]|[13579][01345789]|[2468][1235679])|(?:1[789]|[35679][01345789]|[248][12345679])(?:0[01235679]|[13579][01345789]|[2468][1235679])|(?:15)(?:8[235679]|9[01345789]))([\-.\/])(?:(0?[13578]|1[02])(?:\10)(0?[1-9]|[12][0-9]|3[01])|(0?[469]|11)(?:\10)(0?[1-9]|[12][0-9]|30)|(0?2)(?:\10)(0?[1-9]|1[0-9]|2[0-8])))

1st Alternative((?:16|[357][26]|[2468][048])(?:[0248][048]|[13579][26])|(?:1[6-9]|[2-9][0-9])(?:0[48]|[13579][26]|[2468][048])|(?:15)(?:84|9[048]))([\-.\/])(?:(0?[13578]|1[02])(?:\2)(0?[1-9]|[12][0-9]|3[01])|(0?[469]|11)(?:\2)(0?[1-9]|[12][0-9]|30)|(0?2)(?:\2)(0?[1-9]|[12][0-9]))

Group 1((?:16|[357][26]|[2468][048])(?:[0248][048]|[13579][26])|(?:1[6-9]|[2-9][0-9])(?:0[48]|[13579][26]|[2468][048])|(?:15)(?:84|9[048]))

1st Alternative(?:16|[357][26]|[2468][048])(?:[0248][048]|[13579][26])

Non-Capturing Group(?:16|[357][26]|[2468][048])

1st Alternative16

16the literal text 16

2nd Alternative[357][26]

Character Class[357]

3the literal 3 (51₁₀ / 63₈ / 33₁₆)

5the literal 5 (53₁₀ / 65₈ / 35₁₆)

7the literal 7 (55₁₀ / 67₈ / 37₁₆)

Character Class[26]

2the literal 2 (50₁₀ / 62₈ / 32₁₆)

6the literal 6 (54₁₀ / 66₈ / 36₁₆)

3rd Alternative[2468][048]

Character Class[2468]

2the literal 2 (50₁₀ / 62₈ / 32₁₆)

4the literal 4 (52₁₀ / 64₈ / 34₁₆)

6the literal 6 (54₁₀ / 66₈ / 36₁₆)

8the literal 8 (56₁₀ / 70₈ / 38₁₆)

Character Class[048]

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

4the literal 4 (52₁₀ / 64₈ / 34₁₆)

8the literal 8 (56₁₀ / 70₈ / 38₁₆)

Non-Capturing Group(?:[0248][048]|[13579][26])

1st Alternative[0248][048]

Character Class[0248]

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

2the literal 2 (50₁₀ / 62₈ / 32₁₆)

4the literal 4 (52₁₀ / 64₈ / 34₁₆)

8the literal 8 (56₁₀ / 70₈ / 38₁₆)

Character Class[048]

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

4the literal 4 (52₁₀ / 64₈ / 34₁₆)

8the literal 8 (56₁₀ / 70₈ / 38₁₆)

2nd Alternative[13579][26]

Character Class[13579]

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

3the literal 3 (51₁₀ / 63₈ / 33₁₆)

5the literal 5 (53₁₀ / 65₈ / 35₁₆)

7the literal 7 (55₁₀ / 67₈ / 37₁₆)

9the literal 9 (57₁₀ / 71₈ / 39₁₆)

Character Class[26]

2the literal 2 (50₁₀ / 62₈ / 32₁₆)

6the literal 6 (54₁₀ / 66₈ / 36₁₆)

2nd Alternative(?:1[6-9]|[2-9][0-9])(?:0[48]|[13579][26]|[2468][048])

Non-Capturing Group(?:1[6-9]|[2-9][0-9])

1st Alternative1[6-9]

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

Character Class[6-9]

6-9one character from 6 (54₁₀) to 9 (57₁₀)

2nd Alternative[2-9][0-9]

Character Class[2-9]

2-9one character from 2 (50₁₀) to 9 (57₁₀)

Character Class[0-9]

Non-Capturing Group(?:0[48]|[13579][26]|[2468][048])

3rd Alternative(?:15)(?:84|9[048])

Group 2([\-.\/])

Non-Capturing Group(?:(0?[13578]|1[02])(?:\2)(0?[1-9]|[12][0-9]|3[01])|(0?[469]|11)(?:\2)(0?[1-9]|[12][0-9]|30)|(0?2)(?:\2)(0?[1-9]|[12][0-9]))

2nd Alternative((?:16|[357][26]|[2468][048])(?:0[1235679]|[13579][01345789]|[2468][1235679])|(?:1[789]|[35679][01345789]|[248][12345679])(?:0[01235679]|[13579][01345789]|[2468][1235679])|(?:15)(?:8[235679]|9[01345789]))([\-.\/])(?:(0?[13578]|1[02])(?:\10)(0?[1-9]|[12][0-9]|3[01])|(0?[469]|11)(?:\10)(0?[1-9]|[12][0-9]|30)|(0?2)(?:\10)(0?[1-9]|1[0-9]|2[0-8]))

$end of line

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

25 tokens

Regular Expression

^(?:((?:16|[357][26]|[2468][048])(?:[0248][048]|[13579][26])|(?:1[6-9]|[2-9][0-9])(?:0[48]|[13579][26]|[2468][048])|(?:15)(?:84|9[048]))([\-.\/])(?:(0?[13578]|1[02])(?:\2)(0?[1-9]|[12][0-9]|3[01])|(0?[469]|11)(?:\2)(0?[1-9]|[12][0-9]|30)|(0?2)(?:\2)(0?[1-9]|[12][0-9]))|((?:16|[357][26]|[2468][048])(?:0[1235679]|[13579][01345789]|[2468][1235679])|(?:1[789]|[35679][01345789]|[248][12345679])(?:0[01235679]|[13579][01345789]|[2468][1235679])|(?:15)(?:8[235679]|9[01345789]))([\-.\/])(?:(0?[13578]|1[02])(?:\10)(0?[1-9]|[12][0-9]|3[01])|(0?[469]|11)(?:\10)(0?[1-9]|[12][0-9]|30)|(0?2)(?:\10)(0?[1-9]|1[0-9]|2[0-8])))$

Unit Tests

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