*repeats the group contents below any number of times:
\s*any whitespace character, repeated any number of times
,the literal , (4410 / 548 / 2C16)
\s*any whitespace character, repeated any number of times
\d+a digit, repeated at least once
\s*any whitespace character, repeated any number of times
Non-Capturing Group(?:day|hour|minute|second) daythe literal text day (case sensitive) hourthe literal text hour (case sensitive) minutethe literal text minute (case sensitive) secondthe literal text second (case sensitive) s?optionally matches the literal s (11510 / 1638 / 7316) (case sensitive)