diff --git a/lib/vmpooler/pool_manager.rb b/lib/vmpooler/pool_manager.rb
index 22d7764..6913f58 100644
--- a/lib/vmpooler/pool_manager.rb
+++ b/lib/vmpooler/pool_manager.rb
@@ -121,7 +121,7 @@ module Vmpooler
 
     def move_pending_vm_to_ready(vm, pool)
       clone_time = $redis.hget('vmpooler__vm__' + vm, 'clone')
-      finish = format('%.2f', Time.now - Time.parse(clone_time)) if clone_time
+      finish = format('%<time>.2f', time: Time.now - Time.parse(clone_time)) if clone_time
 
       $redis.smove('vmpooler__pending__' + pool, 'vmpooler__ready__' + pool, vm)
       $redis.hset('vmpooler__boot__' + Date.today.to_s, pool + ':' + vm, finish) # maybe remove as this is never used by vmpooler itself?
@@ -323,7 +323,7 @@ module Vmpooler
         $logger.log('d', "[ ] [#{pool_name}] Starting to clone '#{new_vmname}'")
         start = Time.now
         provider.create_vm(pool_name, new_vmname)
-        finish = format('%.2f', Time.now - start)
+        finish = format('%<time>.2f', time: Time.now - start)
 
         $redis.hset('vmpooler__clone__' + Date.today.to_s, pool_name + ':' + new_vmname, finish)
         $redis.hset('vmpooler__vm__' + new_vmname, 'clone_time', finish)
@@ -369,7 +369,7 @@ module Vmpooler
 
         $redis.srem('vmpooler__completed__' + pool, vm)
 
-        finish = format('%.2f', Time.now - start)
+        finish = format('%<time>.2f', time: Time.now - start)
         $logger.log('s', "[-] [#{pool}] '#{vm}' destroyed in #{finish} seconds")
         $metrics.timing("destroy.#{pool}", finish)
         get_vm_usage_labels(vm)
@@ -503,7 +503,7 @@ module Vmpooler
 
       result = provider.create_disk(pool_name, vm_name, disk_size.to_i)
 
-      finish = format('%.2f', Time.now - start)
+      finish = format('%<time>.2f', time: Time.now - start)
 
       if result
         rdisks = $redis.hget('vmpooler__vm__' + vm_name, 'disk')
@@ -536,7 +536,7 @@ module Vmpooler
 
       result = provider.create_snapshot(pool_name, vm_name, snapshot_name)
 
-      finish = format('%.2f', Time.now - start)
+      finish = format('%<time>.2f', time: Time.now - start)
 
       if result
         $redis.hset('vmpooler__vm__' + vm_name, 'snapshot:' + snapshot_name, Time.now.to_s)
@@ -565,7 +565,7 @@ module Vmpooler
 
       result = provider.revert_snapshot(pool_name, vm_name, snapshot_name)
 
-      finish = format('%.2f', Time.now - start)
+      finish = format('%<time>.2f', time: Time.now - start)
 
       if result
         $logger.log('s', "[+] [snapshot_manager] '#{vm_name}' reverted to snapshot '#{snapshot_name}' in #{finish} seconds")
diff --git a/lib/vmpooler/providers/vsphere.rb b/lib/vmpooler/providers/vsphere.rb
index c5b37ff..c8ef09a 100644
--- a/lib/vmpooler/providers/vsphere.rb
+++ b/lib/vmpooler/providers/vsphere.rb
@@ -75,7 +75,7 @@ module Vmpooler
           vm_object.PowerOffVM_Task.wait_for_completion if vm_object.runtime&.powerState && vm_object.runtime.powerState == 'poweredOn'
           vm_object.Destroy_Task.wait_for_completion
 
-          finish = format('%.2f', Time.now - start)
+          finish = format('%<time>.2f', time: Time.now - start)
           logger.log('s', "[-] [#{pool}] '#{vm_name}' destroyed in #{finish} seconds")
           metrics.timing("destroy.#{pool}", finish)
         rescue RuntimeError
@@ -1008,11 +1008,11 @@ module Vmpooler
         def migrate_vm_and_record_timing(pool_name, vm_name, vm_hash, target_host_object, dest_host_name)
           start = Time.now
           migrate_vm_host(vm_hash['object'], target_host_object)
-          finish = format('%.2f', Time.now - start)
+          finish = format('%<time>.2f', time: Time.now - start)
           metrics.timing("migrate.#{pool_name}", finish)
           metrics.increment("migrate_from.#{vm_hash['host_name']}")
           metrics.increment("migrate_to.#{dest_host_name}")
-          checkout_to_migration = format('%.2f', Time.now - Time.parse($redis.hget("vmpooler__vm__#{vm_name}", 'checkout')))
+          checkout_to_migration = format('%<time>.2f', time: Time.now - Time.parse($redis.hget("vmpooler__vm__#{vm_name}", 'checkout')))
           $redis.hset("vmpooler__vm__#{vm_name}", 'migration_time', finish)
           $redis.hset("vmpooler__vm__#{vm_name}", 'checkout_to_migration', checkout_to_migration)
           finish