diff --git a/libstdc++-v3/testsuite/20_util/duration/io.cc b/libstdc++-v3/testsuite/20_util/duration/io.cc
index a652a34e52f..d2b9de73f83 100644
--- a/libstdc++-v3/testsuite/20_util/duration/io.cc
+++ b/libstdc++-v3/testsuite/20_util/duration/io.cc
@@ -1,4 +1,5 @@
 // { dg-do run { target c++20 } }
+// { dg-timeout-factor 2 }
 
 #include <chrono>
 #include <sstream>
diff --git a/libstdc++-v3/testsuite/std/time/day/io.cc b/libstdc++-v3/testsuite/std/time/day/io.cc
index cf5cd3439c4..3454657f69f 100644
--- a/libstdc++-v3/testsuite/std/time/day/io.cc
+++ b/libstdc++-v3/testsuite/std/time/day/io.cc
@@ -1,5 +1,6 @@
 // { dg-do run { target c++20 } }
 // { dg-require-namedlocale "fr_FR.ISO8859-15" }
+// { dg-timeout-factor 2 }
 
 #include <chrono>
 #include <sstream>
diff --git a/libstdc++-v3/testsuite/std/time/format.cc b/libstdc++-v3/testsuite/std/time/format.cc
index 97035e2cdd4..d6e35832cb5 100644
--- a/libstdc++-v3/testsuite/std/time/format.cc
+++ b/libstdc++-v3/testsuite/std/time/format.cc
@@ -1,4 +1,5 @@
 // { dg-do run { target c++20 } }
+// { dg-timeout-factor 2 }
 
 #include <chrono>
 #include <testsuite_hooks.h>
diff --git a/libstdc++-v3/testsuite/std/time/hh_mm_ss/io.cc b/libstdc++-v3/testsuite/std/time/hh_mm_ss/io.cc
index e431f0cf918..8eb80422e6e 100644
--- a/libstdc++-v3/testsuite/std/time/hh_mm_ss/io.cc
+++ b/libstdc++-v3/testsuite/std/time/hh_mm_ss/io.cc
@@ -1,4 +1,5 @@
 // { dg-do run { target c++20 } }
+// { dg-timeout-factor 2 }
 
 #include <chrono>
 #include <sstream>
diff --git a/libstdc++-v3/testsuite/std/time/month/io.cc b/libstdc++-v3/testsuite/std/time/month/io.cc
index fb1c6425f4c..7e80a53bbb6 100644
--- a/libstdc++-v3/testsuite/std/time/month/io.cc
+++ b/libstdc++-v3/testsuite/std/time/month/io.cc
@@ -1,5 +1,6 @@
 // { dg-do run { target c++20 } }
 // { dg-require-namedlocale "fr_FR.ISO8859-15" }
+// { dg-timeout-factor 2 }
 
 #include <chrono>
 #include <sstream>
diff --git a/libstdc++-v3/testsuite/std/time/month_day/io.cc b/libstdc++-v3/testsuite/std/time/month_day/io.cc
index 4dafbb212f6..30aa5881356 100644
--- a/libstdc++-v3/testsuite/std/time/month_day/io.cc
+++ b/libstdc++-v3/testsuite/std/time/month_day/io.cc
@@ -1,5 +1,6 @@
 // { dg-do run { target c++20 } }
 // { dg-require-namedlocale "fr_FR.ISO8859-15" }
+// { dg-timeout-factor 2 }
 
 #include <chrono>
 #include <sstream>
diff --git a/libstdc++-v3/testsuite/std/time/month_day_last/io.cc b/libstdc++-v3/testsuite/std/time/month_day_last/io.cc
index 4f430d4e3e3..c12cee848ed 100644
--- a/libstdc++-v3/testsuite/std/time/month_day_last/io.cc
+++ b/libstdc++-v3/testsuite/std/time/month_day_last/io.cc
@@ -1,5 +1,6 @@
 // { dg-do run { target c++20 } }
 // { dg-require-namedlocale "fr_FR.ISO8859-15" }
+// { dg-timeout-factor 2 }
 
 #include <chrono>
 #include <sstream>
diff --git a/libstdc++-v3/testsuite/std/time/month_weekday/io.cc b/libstdc++-v3/testsuite/std/time/month_weekday/io.cc
index ee841eb1ef1..82cac648905 100644
--- a/libstdc++-v3/testsuite/std/time/month_weekday/io.cc
+++ b/libstdc++-v3/testsuite/std/time/month_weekday/io.cc
@@ -1,5 +1,6 @@
 // { dg-do run { target c++20 } }
 // { dg-require-namedlocale "fr_FR.ISO8859-15" }
+// { dg-timeout-factor 2 }
 
 #include <chrono>
 #include <sstream>
diff --git a/libstdc++-v3/testsuite/std/time/month_weekday_last/io.cc b/libstdc++-v3/testsuite/std/time/month_weekday_last/io.cc
index 96a9ad9bd62..47968d0e06d 100644
--- a/libstdc++-v3/testsuite/std/time/month_weekday_last/io.cc
+++ b/libstdc++-v3/testsuite/std/time/month_weekday_last/io.cc
@@ -1,5 +1,6 @@
 // { dg-do run { target c++20 } }
 // { dg-require-namedlocale "fr_FR.ISO8859-15" }
+// { dg-timeout-factor 2 }
 
 #include <chrono>
 #include <sstream>
diff --git a/libstdc++-v3/testsuite/std/time/weekday/io.cc b/libstdc++-v3/testsuite/std/time/weekday/io.cc
index 6f6a03774fa..5ed90282f95 100644
--- a/libstdc++-v3/testsuite/std/time/weekday/io.cc
+++ b/libstdc++-v3/testsuite/std/time/weekday/io.cc
@@ -1,5 +1,6 @@
 // { dg-do run { target c++20 } }
 // { dg-require-namedlocale "fr_FR.ISO8859-15" }
+// { dg-timeout-factor 2 }
 
 #include <chrono>
 #include <sstream>
diff --git a/libstdc++-v3/testsuite/std/time/weekday_indexed/io.cc b/libstdc++-v3/testsuite/std/time/weekday_indexed/io.cc
index 530138ea839..29255ad5c06 100644
--- a/libstdc++-v3/testsuite/std/time/weekday_indexed/io.cc
+++ b/libstdc++-v3/testsuite/std/time/weekday_indexed/io.cc
@@ -1,5 +1,6 @@
 // { dg-do run { target c++20 } }
 // { dg-require-namedlocale "fr_FR.ISO8859-15" }
+// { dg-timeout-factor 2 }
 
 #include <chrono>
 #include <sstream>
diff --git a/libstdc++-v3/testsuite/std/time/weekday_last/io.cc b/libstdc++-v3/testsuite/std/time/weekday_last/io.cc
index de88ad20540..6f76922195d 100644
--- a/libstdc++-v3/testsuite/std/time/weekday_last/io.cc
+++ b/libstdc++-v3/testsuite/std/time/weekday_last/io.cc
@@ -1,5 +1,6 @@
 // { dg-do run { target c++20 } }
 // { dg-require-namedlocale "fr_FR.ISO8859-15" }
+// { dg-timeout-factor 2 }
 
 #include <chrono>
 #include <sstream>
diff --git a/libstdc++-v3/testsuite/std/time/year/io.cc b/libstdc++-v3/testsuite/std/time/year/io.cc
index f26162d94cf..6157afae253 100644
--- a/libstdc++-v3/testsuite/std/time/year/io.cc
+++ b/libstdc++-v3/testsuite/std/time/year/io.cc
@@ -1,5 +1,6 @@
 // { dg-do run { target c++20 } }
 // { dg-require-namedlocale "fr_FR.ISO8859-15" }
+// { dg-timeout-factor 2 }
 
 #include <chrono>
 #include <sstream>
diff --git a/libstdc++-v3/testsuite/std/time/year_month/io.cc b/libstdc++-v3/testsuite/std/time/year_month/io.cc
index 1b58a9e2468..7bb3442e299 100644
--- a/libstdc++-v3/testsuite/std/time/year_month/io.cc
+++ b/libstdc++-v3/testsuite/std/time/year_month/io.cc
@@ -1,5 +1,6 @@
 // { dg-do run { target c++20 } }
 // { dg-require-namedlocale "fr_FR.ISO8859-15" }
+// { dg-timeout-factor 2 }
 
 #include <chrono>
 #include <sstream>
diff --git a/libstdc++-v3/testsuite/std/time/year_month_day/io.cc b/libstdc++-v3/testsuite/std/time/year_month_day/io.cc
index 636b30592c8..15c5a9f77be 100644
--- a/libstdc++-v3/testsuite/std/time/year_month_day/io.cc
+++ b/libstdc++-v3/testsuite/std/time/year_month_day/io.cc
@@ -1,5 +1,6 @@
 // { dg-do run { target c++20 } }
 // { dg-require-namedlocale "fr_FR.ISO8859-15" }
+// { dg-timeout-factor 2 }
 
 #include <chrono>
 #include <sstream>
diff --git a/libstdc++-v3/testsuite/std/time/year_month_day_last/io.cc b/libstdc++-v3/testsuite/std/time/year_month_day_last/io.cc
index 0dcc1df9fb7..3241536a2e6 100644
--- a/libstdc++-v3/testsuite/std/time/year_month_day_last/io.cc
+++ b/libstdc++-v3/testsuite/std/time/year_month_day_last/io.cc
@@ -1,5 +1,6 @@
 // { dg-do run { target c++20 } }
 // { dg-require-namedlocale "fr_FR.ISO8859-15" }
+// { dg-timeout-factor 2 }
 
 #include <chrono>
 #include <sstream>
diff --git a/libstdc++-v3/testsuite/std/time/year_month_weekday/io.cc b/libstdc++-v3/testsuite/std/time/year_month_weekday/io.cc
index 77fec80cca6..65baf1d37ae 100644
--- a/libstdc++-v3/testsuite/std/time/year_month_weekday/io.cc
+++ b/libstdc++-v3/testsuite/std/time/year_month_weekday/io.cc
@@ -1,5 +1,6 @@
 // { dg-do run { target c++20 } }
 // { dg-require-namedlocale "fr_FR.ISO8859-15" }
+// { dg-timeout-factor 2 }
 
 #include <chrono>
 #include <sstream>
diff --git a/libstdc++-v3/testsuite/std/time/year_month_weekday_last/io.cc b/libstdc++-v3/testsuite/std/time/year_month_weekday_last/io.cc
index 386f86875b3..17f2244420d 100644
--- a/libstdc++-v3/testsuite/std/time/year_month_weekday_last/io.cc
+++ b/libstdc++-v3/testsuite/std/time/year_month_weekday_last/io.cc
@@ -1,5 +1,6 @@
 // { dg-do run { target c++20 } }
 // { dg-require-namedlocale "fr_FR.ISO8859-15" }
+// { dg-timeout-factor 2 }
 
 #include <chrono>
 #include <sstream>
diff --git a/libstdc++-v3/testsuite/std/time/zoned_time/io.cc b/libstdc++-v3/testsuite/std/time/zoned_time/io.cc
index 6f3ed4d4672..376b2734f19 100644
--- a/libstdc++-v3/testsuite/std/time/zoned_time/io.cc
+++ b/libstdc++-v3/testsuite/std/time/zoned_time/io.cc
@@ -1,5 +1,6 @@
 // { dg-do run { target c++20 } }
 // { dg-require-effective-target cxx11_abi }
+// { dg-timeout-factor 2 }
 
 #include <chrono>
 #include <sstream>
