Brion fixed some of this in https://gerrit.wikimedia.org/r/#/c/22685/
But it seems to be still rather commonly appearing on Commons!
https://commons.wikimedia.org/wiki/File:2012-04_Re%C5%84ska_Wie%C5%9B_26.jpg
2012-09-06 01:02:25 srv279 commonswiki: [53d9f8ff] /wiki/File:2012-04_Re%C5%84ska_Wie%C5%9B_26.jpg Exception from line 130 of /usr/local/apache/common-local/php-1.20wmf11/includes/Timestamp.php: MWTimestamp::setTimestamp : Invalid timestamp - 1971:01:01 11:30:5500
#0 /usr/local/apache/common-local/php-1.20wmf11/includes/Timestamp.php(75): MWTimestamp->setTimestamp('1971:01:01 11:3...')
#1 /usr/local/apache/common-local/php-1.20wmf11/includes/GlobalFunctions.php(2412): MWTimestamp->__construct('1971:01:01 11:3...')
#2 /usr/local/apache/common-local/php-1.20wmf11/includes/media/FormatMetadata.php(107): wfTimestamp(1, '1971:01:01 11:3...')
#3 /usr/local/apache/common-local/php-1.20wmf11/includes/media/MediaHandler.php(364): FormatMetadata::getFormattedData(Array)
#4 /usr/local/apache/common-local/php-1.20wmf11/includes/media/ExifBitmap.php(138): MediaHandler->formatMetadataHelper(Array)
#5 /usr/local/apache/common-local/php-1.20wmf11/includes/filerepo/file/File.php(1403): ExifBitmapHandler->formatMetadata(Object(LocalFile), 'a:48:{s:4:"Make...')
#6 /usr/local/apache/common-local/php-1.20wmf11/includes/ImagePage.php(138): File->formatMetadata()
#7 /usr/local/apache/common-local/php-1.20wmf11/includes/actions/ViewAction.php(37): ImagePage->view()
#8 /usr/local/apache/common-local/php-1.20wmf11/includes/Wiki.php(427): ViewAction->show()
#9 /usr/local/apache/common-local/php-1.20wmf11/includes/Wiki.php(304): MediaWiki->performAction(Object(ImagePage))
#10 /usr/local/apache/common-local/php-1.20wmf11/includes/Wiki.php(536): MediaWiki->performRequest()
#11 /usr/local/apache/common-local/php-1.20wmf11/includes/Wiki.php(446): MediaWiki->main()
#12 /usr/local/apache/common-local/php-1.20wmf11/index.php(59): MediaWiki->run()
#13 /usr/local/apache/common-local/live-1.5/index.php(3): require('/usr/local/apac...')
#14 {main}
Version: 1.20.x
Severity: normal