clock goes back in time

[cheesycarrion]

I made this script to convert solar time to sidereal time, but the problem is that sometimes the (when refreshing the page about once a second) the sidereal second count stops for about 15 seconds, then catches up, but the minutes don't roll over correctly and you stay at the same repeating minute for a while until it somehow fixes itself and gets back on. (at which point it's accurate right down to the second.) I have absolutely no idea why it does this or how to fix it.

 

<?php 
$server_timezone_offset = 2; // If timezone of server is Pacific, set to 0. 

// amount of seconds in a tropical year: 
$tropical = 365.2425*60*60*24; 
// amount of seconds in a sidereal day: 
$sidereal = ((23*60)+56)*60+4.090530833; 

$months = array(0,31,28.25,31,30,31,30,31,31,30,31,30,31); 

$c_sec = date("s") - 114; // I was 9:32:54 off. 
$c_min = date("i") - 34; 
$c_hour = date("H") - $server_timezone_offset - 17; // 2 is for timezone offset from server's time 
$c_day = date("z"); 
$c_month = date("m"); 
$c_year = date("Y"); 

while ($c_sec<0) 
{ 
$c_sec = $c_sec + 60; 
$c_min = $c_min - 1; 
} 
while ($c_min<0) 
{ 
$c_min = $c_min + 60; 
$c_hour = $c_hour - 1; 
} 
while ($c_hour<0) 
{ 
$c_hour = $c_hour + 24; 
$c_day = $c_day - 1; 
} 
while ($c_day<1) 
{ 
$c_day = $c_day + $months[$c_month-1]; 
$c_month = $c_month - 1; 
} 
while ($c_month<1) 
{ 
$c_month = $c_month + 12; 
$c_year = $c_year - 1; 
} 

if (strlen($c_hour)==1) $c_hour = 0 . $c_hour; 
if (strlen($c_min)==1) $c_min = 0 . $c_hour; 
if (strlen($c_sec)==1) $c_sec = 0 . $c_hour; 

////////////////////////////////////////////// 

$c_hour_pacific = date("H") - $server_timezone_offset; 
if ($c_hour_pacific<0) $c_hour_pacific = $c_hour_pacific + 24; 
if (strlen($c_hour_pacific)==1) $c_hour_pacific = 0 . $c_hour_pacific; 

////////////////////////////////////////////// 

$i = 0; 
while ($i < $c_month) 
{ 
$topical_day = $tropical_day + $months[$i]; 
$i++; 
} 
$tropical_day = $tropical_day + $c_day; 
$tropical_sec = $tropical_day * 24 * 60 * 60; 
$tropical_sec = $tropical_sec + $c_sec + ($c_min*60) + ($c_hour*60*60); 

$c_sid_day_j = $tropical_sec / $sidereal; 
$c_sid_day = floor($c_sid_day_j); 
$c_sid_day_frac = $c_sid_day_j - $c_sid_day; 

$c_sid_hours_j = $c_sid_day_frac * 24; 
$c_sid_hours = floor($c_sid_hours_j); 
$c_sid_hours_frac = $c_sid_hours_j - $c_sid_hours; 

$c_sid_minutes_j = $c_sid_hours_frac * 60; 
$c_sid_minutes = floor($c_sid_minutes_j); 
$c_sid_minutes_frac = $c_sid_minutes_j - $c_sid_minutes; 

$c_sid_seconds = round($c_sid_minutes_frac * 60); 

////////////////////////////////////////////// 

if ($c_sid_seconds<10) $c_sid_seconds = 0 . $c_sid_seconds; 
if ($c_sid_minutes<10) $c_sid_minutes = 0 . $c_sid_minutes; 
if ($c_sid_hours<10) $c_sid_hours = 0 . $c_sid_hours; 

////////////////////////////////////////////// 

echo "Solar: " . $c_hour_pacific . ":" . date("i") . ":" . date("s") . "<br />\nSidereal: " . $c_sid_hours . ":" . $c_sid_minutes . ":" . $c_sid_seconds; 
$finished_solar = $c_hour_pacific . ":" . date("i") . ":" . date("s"); 
$finished_sidereal = $c_sid_hours . ":" . $c_sid_minutes . ":" . $c_sid_seconds; 
?>

[cheesycarrion]

bump..

 

If anybody needs anymore information or more specific information, just tell me.

[cheesycarrion]

bump

[cheesycarrion]

bump again. please if you need any more information or need me to make more specific notes or anything, tell me.