Patch submitted upstream: https://github.com/robotframework/robotframework/pull/4286.

diff --git a/atest/robot/standard_libraries/operating_system/modified_time.robot b/atest/robot/standard_libraries/operating_system/modified_time.robot
index d144ffd34..c7681e61d 100644
--- a/atest/robot/standard_libraries/operating_system/modified_time.robot
+++ b/atest/robot/standard_libraries/operating_system/modified_time.robot
@@ -8,7 +8,7 @@ ${TESTFILE}       %{TEMPDIR}${/}robot-os-tests${/}f1.txt
 *** Test Cases ***
 Get Modified Time As Timestamp
     ${tc} =    Check Test Case    ${TESTNAME}
-    Should Match Regexp    ${tc.kws[0].msgs[0].message}    Last modified time of '<a href=.*</a>' is 20\\d\\d-\\d\\d-\\d\\d \\d\\d:\\d\\d:\\d\\d
+    Should Match Regexp    ${tc.kws[0].msgs[0].message}    Last modified time of '<a href=.*</a>' is \\d\\d\\d\\d-\\d\\d-\\d\\d \\d\\d:\\d\\d:\\d\\d
 
 Get Modified Time As Seconds After Epoch
     ${tc} =    Check Test Case    ${TESTNAME}
diff --git a/atest/testdata/standard_libraries/builtin/get_time.robot b/atest/testdata/standard_libraries/builtin/get_time.robot
index 9847d8c42..24ce732ca 100644
--- a/atest/testdata/standard_libraries/builtin/get_time.robot
+++ b/atest/testdata/standard_libraries/builtin/get_time.robot
@@ -11,18 +11,18 @@ Get Time As Timestamp
 
 Get Time As Seconds After Epoch
     ${time} =    Get Time    epoch
-    Should Be True    1000000000 < ${time} < 2000000000
+    Should Be True    0 < ${time}
 
 Get Time As Parts
     @{time} =    Get Time    year, month, day, hour, min, sec
-    Should Be True    2000 < ${time}[0] < 2100
+    Should Match Regexp    ${time}[0]    \\d{4}
     Should Be True    1 <= int('${time}[1]') <= 12
     Should Be True    1 <= int('${time}[2]') <= 31
     Should Be True    0 <= int('${time}[3]') <= 23
     Should Be True    0 <= int('${time}[4]') <= 59
     Should Be True    0 <= int('${time}[5]') <= 59
     ${year}    ${min}    ${sec} =    Get Time    seconds and minutes and year and whatnot
-    Should Be True    2000 < ${year} < 2100
+    Should Match Regexp    ${year}    \\d{4}
     Should Be True    0 <= int('${min}') <= 59
     Should Be True    0 <= int('${sec}') <= 59
 
diff --git a/atest/testdata/standard_libraries/operating_system/modified_time.robot b/atest/testdata/standard_libraries/operating_system/modified_time.robot
index 9489b3c9c..c712ebaed 100644
--- a/atest/testdata/standard_libraries/operating_system/modified_time.robot
+++ b/atest/testdata/standard_libraries/operating_system/modified_time.robot
@@ -14,13 +14,13 @@ Get Modified Time As Timestamp
 
 Get Modified Time As Seconds After Epoch
     ${dirtime} =    Get Modified Time    ${CURDIR}    epoch
-    Should Be True    1000000000 < ${dirtime} < 2000000000
+    Should Be True    ${dirtime} > 0
     ${current} =    Get Time    epoch
     Should Be True    ${current} >= ${dirtime}
 
 Get Modified Time As Parts
     ${year} =    Get Modified Time    ${CURDIR}    year
-    Should Be True    2000 < ${year} < 2100
+    Should Match Regexp    ${year}    \\d{4}
     ${yyyy}    ${mm}    ${dd} =    Get Modified Time    ${CURDIR}    year, month, day
     Should Be Equal    ${yyyy}    ${year}
     # Must use `int('x')` because otherwise 08 and 09 are considered octal
th class='left'>Author</th></tr>
<tr><td><span title='2024-01-09 22:10:12 -0500'>2024-01-09</span></td><td><a href='/guix/commit/gnu/packages/patches/ffmpeg-jami-libopusenc-reload-packet-loss-at-encode.patch?id=de002b93dbc3aace41e0fbfc5c717ab73c9a1aa1'>gnu: ffmpeg-jami: Relocate to (gnu packages video).</a><span class='msg-avail'>...<span class='msg-tooltip'>To avoid Guile module dependency cycles, inherited packages must be defined in
the same module.  Use this opportunity to simplify the patches applying
mechanism, versioning custom patches the same as for other packages.

* gnu/packages/patches/ffmpeg-jami-change-RTCP-ratio.patch: New file.
* gnu/packages/patches/ffmpeg-jami-rtp_ext_abs_send_time.patch: Likewise.
* gnu/packages/patches/ffmpeg-jami-libopusdec-enable-FEC.patch: Likewise.
* gnu/packages/patches/ffmpeg-jami-libopusenc-enable-FEC.patch: Likewise.
* gnu/packages/patches/ffmpeg-jami-libopusenc-reload-packet-loss-at-encode.patch:
Likewise.
* gnu/packages/patches/ffmpeg-jami-remove-mjpeg-log.patch: Likewise.
* gnu/packages/patches/ffmpeg-jami-screen-sharing-x11-fix.patch: Likewise.
* gnu/local.mk (dist_patch_DATA): Register them.
* gnu/packages/jami.scm (jami-apply-custom-patches): Delete procedure.
(%ffmpeg-default-configure-flags): Delete variable.
(ffmpeg-compose-configure-flags): Delete procedure.
(ffmpeg-jami): Move to...
* gnu/packages/video.scm (ffmpeg-jami): ... here.  Apply patches to origin and
repatriate configure flags.

Change-Id: Id374fae18240cd76b224915d80b61422635ccb77
</span></span></td><td>Maxim Cournoyer</td></tr>