GregorianDateRoundSeconds Method

Rounds this instance to the specified number of decimal digits in the seconds, rolling over to minutes, hours, days, etc. as necessary. This instance is assumed to express a time in the CoordinatedUniversalTime (UTC) time standard so the Second will be allowed to go above 60 during a leap second.

Rounds this instance to the specified number of decimal digits in the seconds, rolling over to minutes, hours, days, etc. as necessary. If the specified timeStandard is CoordinatedUniversalTime, (UTC), the seconds will be allowed to go above 60 during a leap second. For any other time standard, the Second will be below 60.