https://community.cloudera.com/t5/Support-Questions/Change-timestamp-format-micro-to-millis-on-NiFi/m-p/332333#M231134 <P>I managed to solve it, I used ${field.value:substring(0,23):toDate("yyyy-MM-dd'T'HH:mm:ss.SSS"):format("yyyy-MM-dd HH:mm: ss.SSS")}</P> Wed, 15 Dec 2021 13:23:02 GMT MRFRANQ 2021-12-15T13:23:02Z https://community.cloudera.com/t5/Support-Questions/Change-timestamp-format-micro-to-millis-on-NiFi/m-p/332135#M231098 <P>I get a file with multiple dates in the following format: 2021-08-25T12:34:48.984704 which is in micro format. How could I change these dates on the nifi to stay in millis? I tried the following: <A href="https://stackoverflow.com/questions/54150828/apache-nifi-expression-language-todate-formatting#new-answer" target="_blank">Apache Nifi Expression Language - toDate formatting</A> formatting&nbsp;but I was not successful in the configuration. I believe that the answer is cohort, but I am not managing to make it work.</P> Mon, 13 Dec 2021 20:40:56 GMT https://community.cloudera.com/t5/Support-Questions/Change-timestamp-format-micro-to-millis-on-NiFi/m-p/332135#M231098 MRFRANQ 2021-12-13T20:40:56Z https://community.cloudera.com/t5/Support-Questions/Change-timestamp-format-micro-to-millis-on-NiFi/m-p/332333#M231134 <P>I managed to solve it, I used ${field.value:substring(0,23):toDate("yyyy-MM-dd'T'HH:mm:ss.SSS"):format("yyyy-MM-dd HH:mm: ss.SSS")}</P> Wed, 15 Dec 2021 13:23:02 GMT https://community.cloudera.com/t5/Support-Questions/Change-timestamp-format-micro-to-millis-on-NiFi/m-p/332333#M231134 MRFRANQ 2021-12-15T13:23:02Z