Rohit, The solr server using TrieDateField must receive values in the format 2011-01-07T17:00:30Z
This should be a UTC-based datetime. The offset can be applied once you get your results back from solr SimpleDateFormat df = new SimpleDateFormat(format); df.setTimeZone(TimeZone.getTimeZone("IST")); java.util.Date dateunix = df.parse(datetime); -Craig -----Original Message----- From: Rohit [mailto:ro...@in-rev.com] Sent: Friday, 6 May 2011 2:31 AM To: solr-user@lucene.apache.org Subject: Solr: org.apache.solr.common.SolrException: Invalid Date String: Hi, I am new to solr and this is my first attempt at indexing solr data, I am getting the following exception while indexing, org.apache.solr.common.SolrException: Invalid Date String:'2011-01-07' at org.apache.solr.schema.DateField.parseMath(DateField.java:165) at org.apache.solr.schema.TrieDateField.createField(TrieDateField.java:169) at org.apache.solr.schema.SchemaField.createField(SchemaField.java:98) at org.apache.solr.update.DocumentBuilder.addField(DocumentBuilder.java:204) at org.apache.solr.update.DocumentBuilder.toDocument(DocumentBuilder.java:277) I understand from reading some articles that Solr stores time only in UTC, this is the query i am trying to index, Select id,text,'language',links,tweetType,source,location, bio,url,utcOffset,timeZone,frenCnt,createdAt,createdOnGMT,createdOnServerTim e,follCnt,favCnt,totStatusCnt,usrCrtDate,humanSentiment,replied,replyMsg,cla ssified,locationDetail, geonameid,country,continent,placeLongitude,placeLatitude,listedCnt,hashtag,m entions,senderInfScr, createdOnGMTDate,DATE_FORMAT(CONVERT_TZ(createdOnGMTDate,'+00:00','+05:30'), '%Y-%m-%d') as IST,DATE_FORMAT(CONVERT_TZ(createdOnGMTDate,'+00:00','+01:00'),'%Y-%m-%d') as ECT,DATE_FORMAT(CONVERT_TZ(createdOnGMTDate,'+00:00','+02:00'),'%Y-%m-%d') as EET,DATE_FORMAT(CONVERT_TZ(createdOnGMTDate,'+00:00','+03:30'),'%Y-%m-%d') as MET,sign(classified) as sentiment from Why i am doing this timezone conversion is because i need to group results by the user timezone. How can i achieve this? Regards, Rohit