diff --git a/app/services/exports/lettings_log_export_service.rb b/app/services/exports/lettings_log_export_service.rb
index a7fff1d53..51d69173a 100644
--- a/app/services/exports/lettings_log_export_service.rb
+++ b/app/services/exports/lettings_log_export_service.rb
@@ -180,6 +180,13 @@ module Exports
       attribute_hash["createddate"] = attribute_hash["created_at"]
       attribute_hash["uploaddate"] = attribute_hash["updated_at"]
 
+      # Covert date times to ISO 8601
+      attribute_hash["createddate"] = attribute_hash["createddate"]&.iso8601
+      attribute_hash["uploaddate"] = attribute_hash["uploaddate"]&.iso8601
+      attribute_hash["mrcdate"] = attribute_hash["mrcdate"]&.iso8601
+      attribute_hash["startdate"] = attribute_hash["startdate"]&.iso8601
+      attribute_hash["voiddate"] = attribute_hash["voiddate"]&.iso8601
+
       attribute_hash["cbl"] = 2 if attribute_hash["cbl"]&.zero?
       attribute_hash["cap"] = 2 if attribute_hash["cap"]&.zero?
       attribute_hash["chr"] = 2 if attribute_hash["chr"]&.zero?
diff --git a/spec/fixtures/exports/general_needs_log.csv b/spec/fixtures/exports/general_needs_log.csv
index 8a2dd1764..3c8617b56 100644
--- a/spec/fixtures/exports/general_needs_log.csv
+++ b/spec/fixtures/exports/general_needs_log.csv
@@ -1,2 +1,2 @@
 status,tenancycode,age1,sex1,ethnic,national,prevten,ecstat1,hhmemb,age2,sex2,ecstat2,age3,sex3,ecstat3,age4,sex4,ecstat4,age5,sex5,ecstat5,age6,sex6,ecstat6,age7,sex7,ecstat7,age8,sex8,ecstat8,homeless,underoccupation_benefitcap,leftreg,reservist,illness,preg_occ,startertenancy,tenancylength,tenancy,ppostcode_full,rsnvac,unittype_gn,beds,offered,wchair,earnings,incfreq,benefits,period,layear,waityear,postcode_full,reasonpref,cbl,chr,cap,reasonother,housingneeds_a,housingneeds_b,housingneeds_c,housingneeds_f,housingneeds_g,housingneeds_h,illness_type_1,illness_type_2,illness_type_3,illness_type_4,illness_type_8,illness_type_5,illness_type_6,illness_type_7,illness_type_9,illness_type_10,rp_homeless,rp_insan_unsat,rp_medwel,rp_hardship,rp_dontknow,tenancyother,irproduct_other,reason,propcode,la,prevloc,hb,hbrentshortfall,mrcdate,incref,startdate,armedforces,unitletas,builtype,voiddate,renttype,needstype,lettype,totchild,totelder,totadult,nocharge,referral,brent,scharge,pscharge,supcharg,tcharge,tshortfall,chcharge,ppcodenk,has_benefits,renewal,wrent,wscharge,wpschrge,wsupchrg,wtcharge,wtshortfall,refused,housingneeds,wchchrg,newprop,relat2,relat3,relat4,relat5,relat6,relat7,relat8,lar,irproduct,joint,sheltered,hhtype,new_old,vacdays,form,owningorgid,owningorgname,hcnum,maningorgid,maningorgname,manhcnum,createddate,uploaddate
-2,BZ737,35,F,2,4,6,0,2,32,M,6,,,,,,,,,,,,,,,,,,,1,0,1,0,1,2,1,5,1,SE2 6RT,6,7,3,2,1,68,1,1,2,2,1,NW1 5TY,1,1,1,2,,1,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,1,0,0,0,,,4,123,E09000003,E07000105,6,1,2020-05-05 10:36:49 UTC,0,2022-02-02 10:36:49 UTC,1,2,1,2019-11-03 00:00:00 UTC,2,1,7,0,0,2,0,2,200.0,50.0,40.0,35.0,325.0,12.0,,1,1,0,100.0,25.0,20.0,17.5,162.5,6.0,0,1,,2,P,,,,,,,,,,,4,2,638,{id},{owning_org_id},DLUHC,1234,{managing_org_id},DLUHC,1234,2022-02-08 16:52:15 UTC,2022-02-08 16:52:15 UTC
+2,BZ737,35,F,2,4,6,0,2,32,M,6,,,,,,,,,,,,,,,,,,,1,0,1,0,1,2,1,5,1,SE2 6RT,6,7,3,2,1,68,1,1,2,2,1,NW1 5TY,1,1,1,2,,1,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,1,0,0,0,,,4,123,E09000003,E07000105,6,1,2020-05-05T10:36:49Z,0,2022-02-02T10:36:49Z,1,2,1,2019-11-03T00:00:00Z,2,1,7,0,0,2,0,2,200.0,50.0,40.0,35.0,325.0,12.0,,1,1,0,100.0,25.0,20.0,17.5,162.5,6.0,0,1,,2,P,,,,,,,,,,,4,2,638,{id},{owning_org_id},DLUHC,1234,{managing_org_id},DLUHC,1234,2022-02-08T16:52:15Z,2022-02-08T16:52:15Z
diff --git a/spec/fixtures/exports/general_needs_log.xml b/spec/fixtures/exports/general_needs_log.xml
index 642b6ac6a..3f1acf814 100644
--- a/spec/fixtures/exports/general_needs_log.xml
+++ b/spec/fixtures/exports/general_needs_log.xml
@@ -87,13 +87,13 @@
     <prevloc>E07000105</prevloc>
     <hb>6</hb>
     <hbrentshortfall>1</hbrentshortfall>
-    <mrcdate>2020-05-05 10:36:49 UTC</mrcdate>
+    <mrcdate>2020-05-05T10:36:49Z</mrcdate>
     <incref>0</incref>
-    <startdate>2022-02-02 10:36:49 UTC</startdate>
+    <startdate>2022-02-02T10:36:49Z</startdate>
     <armedforces>1</armedforces>
     <unitletas>2</unitletas>
     <builtype>1</builtype>
-    <voiddate>2019-11-03 00:00:00 UTC</voiddate>
+    <voiddate>2019-11-03T00:00:00Z</voiddate>
     <renttype>2</renttype>
     <needstype>1</needstype>
     <lettype>7</lettype>
@@ -142,8 +142,8 @@
     <maningorgid>{managing_org_id}</maningorgid>
     <maningorgname>DLUHC</maningorgname>
     <manhcnum>1234</manhcnum>
-    <createddate>2022-02-08 16:52:15 UTC</createddate>
-    <uploaddate>2022-02-08 16:52:15 UTC</uploaddate>
+    <createddate>2022-02-08T16:52:15Z</createddate>
+    <uploaddate>2022-02-08T16:52:15Z</uploaddate>
     <providertype>1</providertype>
   </form>
 </forms>
diff --git a/spec/fixtures/exports/supported_housing_logs.xml b/spec/fixtures/exports/supported_housing_logs.xml
index b04a86b0c..13f4488a0 100644
--- a/spec/fixtures/exports/supported_housing_logs.xml
+++ b/spec/fixtures/exports/supported_housing_logs.xml
@@ -86,13 +86,13 @@
     <prevloc>E07000105</prevloc>
     <hb>6</hb>
     <hbrentshortfall>1</hbrentshortfall>
-    <mrcdate>2020-05-05 10:36:49 UTC</mrcdate>
+    <mrcdate>2020-05-05T10:36:49Z</mrcdate>
     <incref>0</incref>
-    <startdate>2022-02-02 10:36:49 UTC</startdate>
+    <startdate>2022-02-02T10:36:49Z</startdate>
     <armedforces>1</armedforces>
     <unitletas/>
     <builtype/>
-    <voiddate>2019-11-03 00:00:00 UTC</voiddate>
+    <voiddate>2019-11-03T00:00:00Z</voiddate>
     <renttype>2</renttype>
     <needstype>2</needstype>
     <lettype>8</lettype>
@@ -141,8 +141,8 @@
     <maningorgid>{managing_org_id}</maningorgid>
     <maningorgname>DLUHC</maningorgname>
     <manhcnum>1234</manhcnum>
-    <createddate>2022-02-08 16:52:15 UTC</createddate>
-    <uploaddate>2022-02-08 16:52:15 UTC</uploaddate>
+    <createddate>2022-02-08T16:52:15Z</createddate>
+    <uploaddate>2022-02-08T16:52:15Z</uploaddate>
     <unittype_sh>7</unittype_sh>
     <confidential>1</confidential>
     <cligrp1>G</cligrp1>