Github user dongjoon-hyun commented on a diff in the pull request:
https://github.com/apache/spark/pull/21196#discussion_r185104899
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/util/DateTimeUtils.scala
---
@@ -45,6 +45,7 @@ object DateTimeUtils {
// it's 2440587.5, rounding up to compatible with Hive
final val JULIAN_DAY_OF_EPOCH = 2440588
final val SECONDS_PER_DAY = 60 * 60 * 24L
+ final val SECONDS_PER_MONTH = 60 * 60 * 24 * 31D
--- End diff --
Thank you for working on this, @mgaido91 !
BTW, is the naming, `SECONDS_PER_MONTH`, correct for February?
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